diff --git a/enigma-core/app/Cargo.lock b/enigma-core/app/Cargo.lock
index dc546de6..83e05d1e 100644
--- a/enigma-core/app/Cargo.lock
+++ b/enigma-core/app/Cargo.lock
@@ -30,11 +30,6 @@ dependencies = [
  "scoped_threadpool 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "arrayref"
-version = "0.3.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "arrayvec"
 version = "0.4.10"
@@ -146,15 +141,6 @@ dependencies = [
  "constant_time_eq 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "block-buffer"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "byte-tools 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "generic-array 0.8.3 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "block-buffer"
 version = "0.7.3"
@@ -179,11 +165,6 @@ name = "build_const"
 version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "byte-tools"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "byte-tools"
 version = "0.3.1"
@@ -433,15 +414,6 @@ name = "crunchy"
 version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "crypto-mac"
-version = "0.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "constant_time_eq 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "generic-array 0.8.3 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "darling"
 version = "0.9.0"
@@ -474,14 +446,6 @@ dependencies = [
  "syn 0.15.34 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "digest"
-version = "0.6.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "generic-array 0.8.3 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "digest"
 version = "0.8.0"
@@ -563,10 +527,10 @@ version = "0.1.0"
 dependencies = [
  "enigma-types 0.1.0",
  "failure 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "libsecp256k1 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "ring 0.14.6 (git+https://github.com/elichai/ring.git?rev=sgx-0.14.6)",
  "rustc-hex 2.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "secp256k1 0.13.0",
  "sha2 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "tiny-keccak 1.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -823,15 +787,6 @@ dependencies = [
  "num_cpus 1.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "generic-array"
-version = "0.8.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "nodrop 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
- "typenum 1.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "generic-array"
 version = "0.12.0"
@@ -887,26 +842,6 @@ dependencies = [
  "unicode-segmentation 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "hmac"
-version = "0.4.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "crypto-mac 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "digest 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "generic-array 0.8.3 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "hmac-drbg"
-version = "0.1.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "digest 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "generic-array 0.8.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "hmac 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "http"
 version = "0.1.17"
@@ -1080,19 +1015,6 @@ dependencies = [
  "libc 0.2.55 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "libsecp256k1"
-version = "0.2.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "arrayref 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "digest 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "hmac-drbg 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "rand 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "sha2 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "typenum 1.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "linked-hash-map"
 version = "0.5.2"
@@ -1785,6 +1707,13 @@ name = "scopeguard"
 version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "secp256k1"
+version = "0.13.0"
+dependencies = [
+ "cc 1.0.37 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "security-framework"
 version = "0.3.1"
@@ -1870,18 +1799,6 @@ dependencies = [
  "sgx_types 1.0.8 (git+https://github.com/baidu/rust-sgx-sdk.git?rev=v1.0.8)",
 ]
 
-[[package]]
-name = "sha2"
-version = "0.6.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "block-buffer 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "byte-tools 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "digest 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "fake-simd 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "generic-array 0.8.3 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "sha2"
 version = "0.8.0"
@@ -2556,7 +2473,6 @@ dependencies = [
 "checksum aho-corasick 0.7.3 (registry+https://github.com/rust-lang/crates.io-index)" = "e6f484ae0c99fec2e858eb6134949117399f222608d84cadb3f58c1f97c2364c"
 "checksum ansi_term 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ee49baf6cb617b853aa8d93bf420db2383fab46d314482ca2803b40d5fde979b"
 "checksum argon2rs 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)" = "3f67b0b6a86dae6e67ff4ca2b6201396074996379fba2b92ff649126f37cb392"
-"checksum arrayref 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)" = "0d382e583f07208808f6b1249e60848879ba3543f57c32277bf52d69c2f0f0ee"
 "checksum arrayvec 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)" = "92c7fb76bc8826a8b33b4ee5bb07a247a81e76764ab4d55e8f73e3a4d8808c71"
 "checksum async-zmq-derive 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "27d138404687de04720fab6eac87d15a129babb1a30d116492849dbf8a914261"
 "checksum async-zmq-types 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "54e08a9a0112e852b8ed668a703ad17e511c9074ca794f29594a0a7a46667116"
@@ -2569,11 +2485,9 @@ dependencies = [
 "checksum bitflags 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "aad18937a628ec6abcd26d1489012cc0e18c21798210f491af69ded9b881106d"
 "checksum bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "228047a76f468627ca71776ecdebd732a3423081fcf5125585bcd7c49886ce12"
 "checksum blake2-rfc 0.2.18 (registry+https://github.com/rust-lang/crates.io-index)" = "5d6d530bdd2d52966a6d03b7a964add7ae1a288d25214066fd4b600f0f796400"
-"checksum block-buffer 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1339a1042f5d9f295737ad4d9a6ab6bf81c84a933dba110b9200cd6d1448b814"
 "checksum block-buffer 0.7.3 (registry+https://github.com/rust-lang/crates.io-index)" = "c0940dc441f31689269e10ac70eb1002a3a1d3ad1390e030043662eb7fe4688b"
 "checksum block-padding 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)" = "6d4dc3af3ee2e12f3e5d224e5e1e3d73668abbeb69e566d361f7d5563a4fdf09"
 "checksum build_const 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "39092a32794787acd8525ee150305ff051b0aa6cc2abaf193924f5ab05425f39"
-"checksum byte-tools 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "560c32574a12a89ecd91f5e742165893f86e3ab98d21f8ea548658eb9eef5f40"
 "checksum byte-tools 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "e3b5ca7a04898ad4bcd41c90c5285445ff5b791899bb1b0abdd2a2aa791211d7"
 "checksum byteorder 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "a019b10a2a7cdeb292db131fc8113e57ea2a908f6e7894b0c3c671893b65dbeb"
 "checksum bytes 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)" = "206fdffcfa2df7cbe15601ef46c813fce0965eb3286db6b56c583b814b51c81c"
@@ -2600,11 +2514,9 @@ dependencies = [
 "checksum crossbeam-utils 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "2760899e32a1d58d5abb31129f8fae5de75220bc2176e77ff7c627ae45c918d9"
 "checksum crossbeam-utils 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)" = "f8306fcef4a7b563b76b7dd949ca48f52bc1141aa067d2ea09565f3e2652aa5c"
 "checksum crunchy 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "a2f4a431c5c9f662e1200b7c7f02c34e91361150e382089a8f2dec3ba680cbda"
-"checksum crypto-mac 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "779015233ac67d65098614aec748ac1c756ab6677fa2e14cf8b37c08dfed1198"
 "checksum darling 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "fcfbcb0c5961907597a7d1148e3af036268f2b773886b8bb3eeb1e1281d3d3d6"
 "checksum darling_core 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "6afc018370c3bff3eb51f89256a6bdb18b4fdcda72d577982a14954a7a0b402c"
 "checksum darling_macro 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "c6d8dac1c6f1d29a41c4712b4400f878cb4fcc4c7628f298dd75038e024998d1"
-"checksum digest 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)" = "e5b29bf156f3f4b3c4f610a25ff69370616ae6e0657d416de22645483e72af0a"
 "checksum digest 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "05f47366984d3ad862010e22c7ce81a7dbcaebbdfb37241a620f8b6596ee135c"
 "checksum dirs 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)" = "3fd78930633bd1c6e35c4b42b1df7b0cbc6bc191146e512bb3bedf243fcc3901"
 "checksum dtoa 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)" = "ea57b42383d091c85abcc2706240b94ab2a8fa1fc81c10ff23c4de06e2a90b5e"
@@ -2635,14 +2547,11 @@ dependencies = [
 "checksum futures 0.1.27 (registry+https://github.com/rust-lang/crates.io-index)" = "a2037ec1c6c1c4f79557762eab1f7eae1f64f6cb418ace90fae88f0942b60139"
 "checksum futures-cpupool 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)" = "ab90cde24b3319636588d0c35fe03b1333857621051837ed769faefb4c2162e4"
 "checksum generic-array 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)" = "3c0f28c2f5bfb5960175af447a2da7c18900693738343dc896ffbcabd9839592"
-"checksum generic-array 0.8.3 (registry+https://github.com/rust-lang/crates.io-index)" = "fceb69994e330afed50c93524be68c42fa898c2d9fd4ee8da03bd7363acd26f2"
 "checksum glob 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "8be18de09a56b60ed0edf84bc9df007e30040691af7acd1c41874faac5895bfb"
 "checksum h2 0.1.20 (registry+https://github.com/rust-lang/crates.io-index)" = "2b53def7bb0253af7718036fe9338c15defd209136819464384f3a553e07481b"
 "checksum hashbrown 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)" = "3bae29b6653b3412c2e71e9d486db9f9df5d701941d86683005efb9f2d28e3da"
 "checksum heapsize 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "1679e6ea370dee694f91f1dc469bf94cf8f52051d147aec3e1f9497c6fc22461"
 "checksum heck 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "20564e78d53d2bb135c343b3f47714a56af2061f1c928fdb541dc7b9fdd94205"
-"checksum hmac 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7a13f4163aa0c5ca1be584aace0e2212b2e41be5478218d4f657f5f778b2ae2a"
-"checksum hmac-drbg 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "4fe727d41d2eec0a6574d887914347e5ff96a3b87177817e2a9820c5c87fecc2"
 "checksum http 0.1.17 (registry+https://github.com/rust-lang/crates.io-index)" = "eed324f0f0daf6ec10c474f150505af2c143f251722bf9dbd1261bd1f2ee2c1a"
 "checksum http-body 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "6741c859c1b2463a423a1dbce98d418e6c3c3fc720fb0d45528657320920292d"
 "checksum httparse 1.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "e8734b0cfd3bc3e101ec59100e101c2eecd19282202e87808b3037b442777a83"
@@ -2662,7 +2571,6 @@ dependencies = [
 "checksum libc 0.2.55 (registry+https://github.com/rust-lang/crates.io-index)" = "42914d39aad277d9e176efbdad68acb1d5443ab65afe0e0e4f0d49352a950880"
 "checksum libloading 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "9c3ad660d7cb8c5822cd83d10897b0f1f1526792737a179e73896152f85b88c2"
 "checksum librocksdb-sys 5.18.3 (registry+https://github.com/rust-lang/crates.io-index)" = "d19778314deaa7048f2ea7d07b8aa12e1c227acebe975a37eeab6d2f8c74e41b"
-"checksum libsecp256k1 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "688e8d65e495567c2c35ea0001b26b9debf0b4ea11f8cccc954233b75fc3428a"
 "checksum linked-hash-map 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "ae91b68aebc4ddb91978b11a1b02ddd8602a05ec19002801c5666000e05e0f83"
 "checksum lock_api 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "62ebf1391f6acad60e5c8b43706dde4582df75c06698ab44511d15016bc2442c"
 "checksum log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)" = "e19e8d5c34a3e0e2223db8e060f9e8264aeeb5c5fc64a4ee9965c062211c024b"
@@ -2751,7 +2659,6 @@ dependencies = [
 "checksum serde_urlencoded 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)" = "642dd69105886af2efd227f75a520ec9b44a820d65bc133a9131f7d229fd165a"
 "checksum sgx_types 1.0.8 (git+https://github.com/baidu/rust-sgx-sdk.git?rev=v1.0.8)" = "<none>"
 "checksum sgx_urts 1.0.8 (git+https://github.com/baidu/rust-sgx-sdk.git?rev=v1.0.8)" = "<none>"
-"checksum sha2 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7d963c78ce367df26d7ea8b8cc655c651b42e8a1e584e869c1e17dae3ccb116a"
 "checksum sha2 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7b4d8bfd0e469f417657573d8451fb33d16cfe0989359b93baf3a1ffc639543d"
 "checksum simplelog 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)" = "2e95345f185d5adeb8ec93459d2dc99654e294cc6ccf5b75414d8ea262de9a13"
 "checksum siphasher 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "0b8de496cf83d4ed58b6be86c3a275b8602f6ffe98d3024a869e124147a9a3ac"
diff --git a/enigma-core/enclave/Cargo.lock b/enigma-core/enclave/Cargo.lock
index 5a0bbd62..b047b3e9 100644
--- a/enigma-core/enclave/Cargo.lock
+++ b/enigma-core/enclave/Cargo.lock
@@ -8,11 +8,6 @@ dependencies = [
  "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "arrayref"
-version = "0.3.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "arrayvec"
 version = "0.4.10"
@@ -111,7 +106,7 @@ dependencies = [
 
 [[package]]
 name = "cc"
-version = "1.0.37"
+version = "1.0.35"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -141,25 +136,11 @@ dependencies = [
  "bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "constant_time_eq"
-version = "0.1.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "crunchy"
 version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "crypto-mac"
-version = "0.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "constant_time_eq 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "generic-array 0.8.3 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "darling"
 version = "0.9.0"
@@ -246,9 +227,9 @@ version = "0.1.0"
 dependencies = [
  "enigma-types 0.1.0",
  "failure 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "libsecp256k1 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "ring 0.14.6 (git+https://github.com/elichai/ring.git?rev=sgx-0.14.6)",
  "rustc-hex 2.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "secp256k1 0.13.0",
  "sgx_trts 1.0.8 (git+https://github.com/baidu/rust-sgx-sdk.git?rev=v1.0.8)",
  "sgx_tstd 1.0.8 (git+https://github.com/baidu/rust-sgx-sdk.git?rev=v1.0.8)",
  "sgx_types 1.0.8 (git+https://github.com/baidu/rust-sgx-sdk.git?rev=v1.0.8)",
@@ -464,26 +445,6 @@ dependencies = [
  "typenum 1.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "hmac"
-version = "0.4.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "crypto-mac 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "digest 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "generic-array 0.8.3 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "hmac-drbg"
-version = "0.1.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "digest 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "generic-array 0.8.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "hmac 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "ident_case"
 version = "1.0.1"
@@ -527,19 +488,6 @@ name = "libc"
 version = "0.2.55"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "libsecp256k1"
-version = "0.2.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "arrayref 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "digest 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "hmac-drbg 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "rand 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "sha2 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "typenum 1.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "log"
 version = "0.4.6"
@@ -624,17 +572,6 @@ dependencies = [
  "proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "rand"
-version = "0.4.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "fuchsia-cprng 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "rdrand 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "rand"
 version = "0.6.5"
@@ -765,7 +702,7 @@ name = "ring"
 version = "0.14.6"
 source = "git+https://github.com/elichai/ring.git?rev=sgx-0.14.6#1454e91f6395f6f42033402da38b394bb4941a05"
 dependencies = [
- "cc 1.0.37 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cc 1.0.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.55 (registry+https://github.com/rust-lang/crates.io-index)",
  "spin 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -823,6 +760,13 @@ name = "ryu"
 version = "0.2.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "secp256k1"
+version = "0.13.0"
+dependencies = [
+ "cc 1.0.35 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "serde"
 version = "1.0.91"
@@ -1208,7 +1152,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [metadata]
 "checksum ansi_term 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ee49baf6cb617b853aa8d93bf420db2383fab46d314482ca2803b40d5fde979b"
-"checksum arrayref 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)" = "0d382e583f07208808f6b1249e60848879ba3543f57c32277bf52d69c2f0f0ee"
 "checksum arrayvec 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)" = "92c7fb76bc8826a8b33b4ee5bb07a247a81e76764ab4d55e8f73e3a4d8808c71"
 "checksum atty 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "9a7d5b8723950951411ee34d271d99dddcc2035a16ab25310ea2c8cfd4369652"
 "checksum autocfg 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "a6d640bee2da49f60a4068a7fae53acde8982514ab7bae8b8cea9e88cbcfd799"
@@ -1221,13 +1164,11 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum byteorder 1.3.1 (git+https://github.com/mesalock-linux/byteorder-sgx?rev=70965e6bda25f6b77f968684e20b902dc2162a9c)" = "<none>"
 "checksum byteorder 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "a019b10a2a7cdeb292db131fc8113e57ea2a908f6e7894b0c3c671893b65dbeb"
 "checksum cbindgen 0.8.7 (registry+https://github.com/rust-lang/crates.io-index)" = "1f861ef68cabbb271d373a7795014052bff37edce22c620d95e395e8719d7dc5"
-"checksum cc 1.0.37 (registry+https://github.com/rust-lang/crates.io-index)" = "39f75544d7bbaf57560d2168f28fd649ff9c76153874db88bdbdfd839b1a7e7d"
+"checksum cc 1.0.35 (registry+https://github.com/rust-lang/crates.io-index)" = "5e5f3fee5eeb60324c2781f1e41286bdee933850fff9b3c672587fed5ec58c83"
 "checksum cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)" = "b486ce3ccf7ffd79fdeb678eac06a9e6c09fc88d33836340becb8fffe87c5e33"
 "checksum clap 2.33.0 (registry+https://github.com/rust-lang/crates.io-index)" = "5067f5bb2d80ef5d68b4c87db81601f0b75bca627bc2ef76b141d7b846a3c6d9"
 "checksum cloudabi 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "ddfc5b9aa5d4507acaf872de71051dfd0e309860e88966e1051e462a077aac4f"
-"checksum constant_time_eq 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "8ff012e225ce166d4422e0e78419d901719760f62ae2b7969ca6b564d1b54a9e"
 "checksum crunchy 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "a2f4a431c5c9f662e1200b7c7f02c34e91361150e382089a8f2dec3ba680cbda"
-"checksum crypto-mac 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "779015233ac67d65098614aec748ac1c756ab6677fa2e14cf8b37c08dfed1198"
 "checksum darling 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "fcfbcb0c5961907597a7d1148e3af036268f2b773886b8bb3eeb1e1281d3d3d6"
 "checksum darling_core 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "6afc018370c3bff3eb51f89256a6bdb18b4fdcda72d577982a14954a7a0b402c"
 "checksum darling_macro 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "c6d8dac1c6f1d29a41c4712b4400f878cb4fcc4c7628f298dd75038e024998d1"
@@ -1250,15 +1191,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum fuchsia-cprng 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "a06f77d526c1a601b7c4cdd98f54b5eaabffc14d5f2f0296febdc7f357c6d3ba"
 "checksum generic-array 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)" = "3c0f28c2f5bfb5960175af447a2da7c18900693738343dc896ffbcabd9839592"
 "checksum generic-array 0.8.3 (registry+https://github.com/rust-lang/crates.io-index)" = "fceb69994e330afed50c93524be68c42fa898c2d9fd4ee8da03bd7363acd26f2"
-"checksum hmac 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7a13f4163aa0c5ca1be584aace0e2212b2e41be5478218d4f657f5f778b2ae2a"
-"checksum hmac-drbg 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "4fe727d41d2eec0a6574d887914347e5ff96a3b87177817e2a9820c5c87fecc2"
 "checksum ident_case 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "b9e0384b61958566e926dc50660321d12159025e767c18e043daf26b70104c39"
 "checksum itoa 0.4.4 (git+https://github.com/mesalock-linux/itoa-sgx.git)" = "<none>"
 "checksum itoa 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)" = "501266b7edd0174f8530248f87f99c88fbe60ca4ef3dd486835b8d8d53136f7f"
 "checksum json-patch 0.2.5 (git+https://github.com/enigmampc/json-patch.git?rev=0.2.5-sgx-1.0.8)" = "<none>"
 "checksum lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "bc5729f27f159ddd61f4df6228e827e86643d4d3e7c32183cb30a1c08f604a14"
 "checksum libc 0.2.55 (registry+https://github.com/rust-lang/crates.io-index)" = "42914d39aad277d9e176efbdad68acb1d5443ab65afe0e0e4f0d49352a950880"
-"checksum libsecp256k1 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "688e8d65e495567c2c35ea0001b26b9debf0b4ea11f8cccc954233b75fc3428a"
 "checksum log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)" = "c84ec4b527950aa83a329754b01dbe3f58361d1c5efacd1f6d68c494d08a17c6"
 "checksum log-derive 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "90b7e153f2d4bf69d46a9e640e2c96573940fca671d275bf6f7687f6bab803fc"
 "checksum memory_units 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "71d96e3f3c0b6325d8ccd83c33b28acb183edcb6c67938ba104ec546854b0882"
@@ -1270,7 +1208,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)" = "cf3d2011ab5c909338f7887f4fc896d35932e29146c12c8d01da6b22a80ba759"
 "checksum pwasm-utils 0.5.0 (git+https://github.com/enigmampc/wasm-utils.git?rev=0.5.0-sgx-1.0.8)" = "<none>"
 "checksum quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)" = "faf4799c5d274f3868a4aae320a0a182cbd2baee377b378f080e16a23e9d80db"
-"checksum rand 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)" = "552840b97013b1a26992c11eac34bdd778e464601a4c2054b5f0bff7c6761293"
 "checksum rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)" = "6d71dacdc3c88c1fde3885a3be3fbab9f35724e6ce99467f7d9c5026132184ca"
 "checksum rand_chacha 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "556d3a1ca6600bfcbab7c7c91ccb085ac7fbbcd70e008a98742e7847f4f7bcef"
 "checksum rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7a6fdeb83b075e8266dcc8762c22776f6877a63111121f5f8c7411e5be7eed4b"
diff --git a/enigma-crypto/Cargo.toml b/enigma-crypto/Cargo.toml
index b5ea0ee1..df97b439 100644
--- a/enigma-crypto/Cargo.toml
+++ b/enigma-crypto/Cargo.toml
@@ -12,7 +12,8 @@ failure = { version = "0.1", default-features = false, features = ["derive"] }
 
 tiny-keccak = { version = "1.4", optional = true }
 sha2 = { version = "0.8.0", default-features = false, optional = true }
-libsecp256k1 = { version = "0.2", optional = true }
+#libsecp256k1 = { version = "0.2", optional = true }
+secp256k1 = { path = "/home/elichai2/gits/elichai/rust-secp256k1", default-features = false, features = ["recovery"], optional = true }
 ring = { git = "https://github.com/elichai/ring.git", rev = "sgx-0.14.6", default-features = false, optional = true }
 
 rand_std = { package = "rand", version = "0.6.4", optional = true }
@@ -25,7 +26,7 @@ sgx_types = { git = "https://github.com/baidu/rust-sgx-sdk.git", rev = "v1.0.8",
 # Right now symmetric encryption requires regular std or sgx std.
 [features]
 default = ["std", "symmetric", "asymmetric", "hash"]
-asymmetric = ["libsecp256k1", "hash"]
+asymmetric = ["secp256k1", "hash"]
 hash = ["sha2", "tiny-keccak"]
 symmetric = []
 # both regular std and sgx will import symmetric encryption.
diff --git a/enigma-crypto/src/asymmetric.rs b/enigma-crypto/src/asymmetric.rs
index 0ac482fd..aa2026af 100644
--- a/enigma-crypto/src/asymmetric.rs
+++ b/enigma-crypto/src/asymmetric.rs
@@ -1,34 +1,43 @@
 use crate::error::CryptoError;
-use secp256k1::{PublicKey, SecretKey, SharedSecret,  RecoveryId, Signature};
+use secp256k1::{PublicKey, SecretKey, Secp256k1, All, Message, ecdh::SharedSecret, recovery::{RecoveryId,RecoverableSignature}};
 use crate::hash::Keccak256;
 use enigma_types::{DhKey, PubKey};
 
+
+// Replacing libsecp256k1 with rust-secp256k1 makes it not compile to WASM. we should either investigate it further,
+// Or feature gate between them
+// (another possibility is to outright not use it in wasm and maybe provide other crypto in a wasm specific program or provide these as external in the runtime)
+
+
 #[derive(Debug)]
 pub struct KeyPair {
     pubkey: PublicKey,
     privkey: SecretKey,
+    ctx: Secp256k1<All>,
 }
 
 impl KeyPair {
     #[cfg(any(feature = "sgx", feature = "std"))]
     pub fn new() -> Result<KeyPair, CryptoError> {
+        let ctx = Secp256k1::new();
         use crate::rand;
         loop {
             let mut me: [u8; 32] = [0; 32];
             rand::random(&mut me)?;
-            if let Ok(privkey) = SecretKey::parse(&me) {
-                let pubkey = PublicKey::from_secret_key(&privkey);
-                return Ok(KeyPair { privkey, pubkey });
+            if let Ok(privkey) = SecretKey::from_slice(&me) {
+                let pubkey = PublicKey::from_secret_key(&ctx, &privkey);
+                return Ok(KeyPair { privkey, pubkey, ctx });
             }
         }
     }
 
     pub fn from_slice(privkey: &[u8; 32]) -> Result<KeyPair, CryptoError> {
-        let privkey = SecretKey::parse(&privkey)
+        let ctx = Secp256k1::new();
+        let privkey = SecretKey::from_slice(privkey)
             .map_err(|e| CryptoError::KeyError { key_type: "Private Key", err: Some(e) })?;
-        let pubkey = PublicKey::from_secret_key(&privkey);
+        let pubkey = PublicKey::from_secret_key(&ctx, &privkey);
 
-        Ok(KeyPair { privkey, pubkey })
+        Ok(KeyPair { privkey, pubkey, ctx })
     }
 
     pub fn derive_key(&self, _pubarr: &PubKey) -> Result<DhKey, CryptoError> {
@@ -36,18 +45,21 @@ impl KeyPair {
         pubarr[0] = 4;
         pubarr[1..].copy_from_slice(&_pubarr[..]);
 
-        let pubkey = PublicKey::parse(&pubarr)
+        let pubkey = PublicKey::from_slice(&pubarr)
             .map_err(|e| CryptoError::KeyError { key_type: "Private Key", err: Some(e) })?;
 
-        let shared = SharedSecret::new(&pubkey, &self.privkey)
-            .map_err(|_| CryptoError::DerivingKeyError { self_key: self.get_pubkey(), other_key: *_pubarr })?;
+        let shared = SharedSecret::new(&pubkey, &self.privkey);
 
         let mut result = [0u8; 32];
-        result.copy_from_slice(shared.as_ref());
+        result.copy_from_slice(&shared[..]);
         Ok(result)
     }
 
-    pub fn get_privkey(&self) -> [u8; 32] { self.privkey.serialize() }
+    pub fn get_privkey(&self) -> [u8; 32] {
+        let mut result = [0u8; 32];
+        result.copy_from_slice(&self.privkey[..]);
+        result
+    }
 
     /// Get the Public Key and slice the first byte
     /// The first byte represents if the key is compressed or not.
@@ -62,7 +74,7 @@ impl KeyPair {
 
     fn pubkey_object_to_pubkey(key: &PublicKey) -> PubKey {
         let mut sliced_pubkey: [u8; 64] = [0; 64];
-        sliced_pubkey.clone_from_slice(&key.serialize()[1..65]);
+        sliced_pubkey.clone_from_slice(&key.serialize_uncompressed()[1..65]);
         sliced_pubkey
     }
 
@@ -82,14 +94,14 @@ impl KeyPair {
     /// 3. 1 Bytes ECDSA `v` variable aligned to the right for Ethereum compatibility
     pub fn sign(&self, message: &[u8]) -> Result<[u8; 65], CryptoError> {
         let hashed_msg = message.keccak256();
-        let message_to_sign = secp256k1::Message::parse(&hashed_msg);
-
-        let (sig, recovery) = secp256k1::sign(&message_to_sign, &self.privkey)
-            .map_err(|_| CryptoError::SigningError { hashed_msg: *hashed_msg })?;
+        let message_to_sign = Message::from_slice(hashed_msg.as_ref())
+            .map_err(|_| CryptoError::SigningError {hashed_msg: Default::default()})?;
 
-        let v: u8 = recovery.into();
+        let recoverable_sig = self.ctx.sign_recoverable(&message_to_sign, &self.privkey);
+        let (recovery, sig) = recoverable_sig.serialize_compact();
+        let v = recovery.to_i32() as u8;
         let mut returnvalue = [0u8; 65];
-        returnvalue[..64].copy_from_slice(&sig.serialize());
+        returnvalue[..64].copy_from_slice(&sig);
         returnvalue[64] = v + 27;
         Ok(returnvalue)
     }
@@ -105,13 +117,21 @@ impl KeyPair {
     /// let recovered_pubkey = KeyPair::recover(msg, sig).unwrap();
     /// ```
     pub fn recover(message: &[u8], sig: [u8;65]) -> Result<[u8; 64], CryptoError> {
-        let recovery = RecoveryId::parse(sig[64] -27)
+        let ctx = Secp256k1::new();
+
+        let recovery = sig[64].checked_sub(27)
+            .ok_or(CryptoError::ParsingError { sig })?;
+        let recovery = RecoveryId::from_i32(recovery as i32)
             .map_err(|_| CryptoError::ParsingError { sig })?;
-        let signature = Signature::parse_slice(&sig[..64])
+
+        let recoverable_sig = RecoverableSignature::from_compact(&sig[..64], recovery)
             .map_err(|_| CryptoError::ParsingError { sig } )?;
+
         let hashed_msg = message.keccak256();
-        let signed_message = secp256k1::Message::parse(&hashed_msg);
-        let recovered_pub = secp256k1::recover(&signed_message, &signature, &recovery)
+
+        let signed_message = Message::from_slice(hashed_msg.as_ref()).map_err(|_| CryptoError::ParsingError { sig } )?;
+
+        let recovered_pub = ctx.recover(&signed_message, &recoverable_sig)
             .map_err(|_| CryptoError::RecoveryError { sig } )?;
         Ok(KeyPair::pubkey_object_to_pubkey(&recovered_pub))
     }
diff --git a/enigma-principal/app/Cargo.lock b/enigma-principal/app/Cargo.lock
index 43a85e96..6563b18b 100644
--- a/enigma-principal/app/Cargo.lock
+++ b/enigma-principal/app/Cargo.lock
@@ -30,11 +30,6 @@ dependencies = [
  "scoped_threadpool 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "arrayref"
-version = "0.3.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "arrayvec"
 version = "0.4.10"
@@ -101,15 +96,6 @@ dependencies = [
  "constant_time_eq 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "block-buffer"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "byte-tools 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "generic-array 0.8.3 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "block-buffer"
 version = "0.7.3"
@@ -142,11 +128,6 @@ name = "build_const"
 version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "byte-tools"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "byte-tools"
 version = "0.3.1"
@@ -340,15 +321,6 @@ name = "crunchy"
 version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "crypto-mac"
-version = "0.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "constant_time_eq 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "generic-array 0.8.3 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "darling"
 version = "0.9.0"
@@ -381,14 +353,6 @@ dependencies = [
  "syn 0.15.34 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "digest"
-version = "0.6.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "generic-array 0.8.3 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "digest"
 version = "0.8.0"
@@ -436,10 +400,10 @@ version = "0.1.0"
 dependencies = [
  "enigma-types 0.1.0",
  "failure 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "libsecp256k1 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "ring 0.14.6 (git+https://github.com/elichai/ring.git?rev=sgx-0.14.6)",
  "rustc-hex 2.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "secp256k1 0.13.0",
  "sha2 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "tiny-keccak 1.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -709,15 +673,6 @@ dependencies = [
  "num_cpus 1.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "generic-array"
-version = "0.8.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "nodrop 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
- "typenum 1.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "generic-array"
 version = "0.12.0"
@@ -771,26 +726,6 @@ dependencies = [
  "unicode-segmentation 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "hmac"
-version = "0.4.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "crypto-mac 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "digest 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "generic-array 0.8.3 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "hmac-drbg"
-version = "0.1.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "digest 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "generic-array 0.8.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "hmac 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "http"
 version = "0.1.17"
@@ -1006,19 +941,6 @@ name = "libc"
 version = "0.2.55"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "libsecp256k1"
-version = "0.2.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "arrayref 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "digest 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "hmac-drbg 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "rand 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "sha2 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "typenum 1.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "lock_api"
 version = "0.1.5"
@@ -1666,6 +1588,13 @@ name = "scopeguard"
 version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "secp256k1"
+version = "0.13.0"
+dependencies = [
+ "cc 1.0.37 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "security-framework"
 version = "0.3.1"
@@ -1751,18 +1680,6 @@ dependencies = [
  "sgx_types 1.0.8 (git+https://github.com/baidu/rust-sgx-sdk.git?rev=v1.0.8)",
 ]
 
-[[package]]
-name = "sha2"
-version = "0.6.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "block-buffer 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "byte-tools 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "digest 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "fake-simd 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "generic-array 0.8.3 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "sha2"
 version = "0.8.0"
@@ -2362,7 +2279,6 @@ dependencies = [
 "checksum aho-corasick 0.7.3 (registry+https://github.com/rust-lang/crates.io-index)" = "e6f484ae0c99fec2e858eb6134949117399f222608d84cadb3f58c1f97c2364c"
 "checksum ansi_term 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ee49baf6cb617b853aa8d93bf420db2383fab46d314482ca2803b40d5fde979b"
 "checksum argon2rs 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)" = "3f67b0b6a86dae6e67ff4ca2b6201396074996379fba2b92ff649126f37cb392"
-"checksum arrayref 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)" = "0d382e583f07208808f6b1249e60848879ba3543f57c32277bf52d69c2f0f0ee"
 "checksum arrayvec 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)" = "92c7fb76bc8826a8b33b4ee5bb07a247a81e76764ab4d55e8f73e3a4d8808c71"
 "checksum atty 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "9a7d5b8723950951411ee34d271d99dddcc2035a16ab25310ea2c8cfd4369652"
 "checksum autocfg 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "a6d640bee2da49f60a4068a7fae53acde8982514ab7bae8b8cea9e88cbcfd799"
@@ -2371,12 +2287,10 @@ dependencies = [
 "checksum base64 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)" = "0b25d992356d2eb0ed82172f5248873db5560c4721f564b13cb5193bda5e668e"
 "checksum bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "228047a76f468627ca71776ecdebd732a3423081fcf5125585bcd7c49886ce12"
 "checksum blake2-rfc 0.2.18 (registry+https://github.com/rust-lang/crates.io-index)" = "5d6d530bdd2d52966a6d03b7a964add7ae1a288d25214066fd4b600f0f796400"
-"checksum block-buffer 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1339a1042f5d9f295737ad4d9a6ab6bf81c84a933dba110b9200cd6d1448b814"
 "checksum block-buffer 0.7.3 (registry+https://github.com/rust-lang/crates.io-index)" = "c0940dc441f31689269e10ac70eb1002a3a1d3ad1390e030043662eb7fe4688b"
 "checksum block-padding 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)" = "6d4dc3af3ee2e12f3e5d224e5e1e3d73668abbeb69e566d361f7d5563a4fdf09"
 "checksum bstr 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "853b090ce0f45d0265902666bf88039ea3da825e33796716c511a1ec9c170036"
 "checksum build_const 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "39092a32794787acd8525ee150305ff051b0aa6cc2abaf193924f5ab05425f39"
-"checksum byte-tools 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "560c32574a12a89ecd91f5e742165893f86e3ab98d21f8ea548658eb9eef5f40"
 "checksum byte-tools 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "e3b5ca7a04898ad4bcd41c90c5285445ff5b791899bb1b0abdd2a2aa791211d7"
 "checksum byteorder 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "a019b10a2a7cdeb292db131fc8113e57ea2a908f6e7894b0c3c671893b65dbeb"
 "checksum bytes 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)" = "206fdffcfa2df7cbe15601ef46c813fce0965eb3286db6b56c583b814b51c81c"
@@ -2399,11 +2313,9 @@ dependencies = [
 "checksum crossbeam-queue 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7c979cd6cfe72335896575c6b5688da489e420d36a27a0b9eb0c73db574b4a4b"
 "checksum crossbeam-utils 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)" = "f8306fcef4a7b563b76b7dd949ca48f52bc1141aa067d2ea09565f3e2652aa5c"
 "checksum crunchy 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "a2f4a431c5c9f662e1200b7c7f02c34e91361150e382089a8f2dec3ba680cbda"
-"checksum crypto-mac 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "779015233ac67d65098614aec748ac1c756ab6677fa2e14cf8b37c08dfed1198"
 "checksum darling 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "fcfbcb0c5961907597a7d1148e3af036268f2b773886b8bb3eeb1e1281d3d3d6"
 "checksum darling_core 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "6afc018370c3bff3eb51f89256a6bdb18b4fdcda72d577982a14954a7a0b402c"
 "checksum darling_macro 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "c6d8dac1c6f1d29a41c4712b4400f878cb4fcc4c7628f298dd75038e024998d1"
-"checksum digest 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)" = "e5b29bf156f3f4b3c4f610a25ff69370616ae6e0657d416de22645483e72af0a"
 "checksum digest 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "05f47366984d3ad862010e22c7ce81a7dbcaebbdfb37241a620f8b6596ee135c"
 "checksum dirs 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)" = "3fd78930633bd1c6e35c4b42b1df7b0cbc6bc191146e512bb3bedf243fcc3901"
 "checksum dtoa 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)" = "ea57b42383d091c85abcc2706240b94ab2a8fa1fc81c10ff23c4de06e2a90b5e"
@@ -2432,13 +2344,10 @@ dependencies = [
 "checksum futures 0.1.27 (registry+https://github.com/rust-lang/crates.io-index)" = "a2037ec1c6c1c4f79557762eab1f7eae1f64f6cb418ace90fae88f0942b60139"
 "checksum futures-cpupool 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)" = "ab90cde24b3319636588d0c35fe03b1333857621051837ed769faefb4c2162e4"
 "checksum generic-array 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)" = "3c0f28c2f5bfb5960175af447a2da7c18900693738343dc896ffbcabd9839592"
-"checksum generic-array 0.8.3 (registry+https://github.com/rust-lang/crates.io-index)" = "fceb69994e330afed50c93524be68c42fa898c2d9fd4ee8da03bd7363acd26f2"
 "checksum globset 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)" = "ef4feaabe24a0a658fd9cf4a9acf6ed284f045c77df0f49020ba3245cfb7b454"
 "checksum h2 0.1.20 (registry+https://github.com/rust-lang/crates.io-index)" = "2b53def7bb0253af7718036fe9338c15defd209136819464384f3a553e07481b"
 "checksum heapsize 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "1679e6ea370dee694f91f1dc469bf94cf8f52051d147aec3e1f9497c6fc22461"
 "checksum heck 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "20564e78d53d2bb135c343b3f47714a56af2061f1c928fdb541dc7b9fdd94205"
-"checksum hmac 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7a13f4163aa0c5ca1be584aace0e2212b2e41be5478218d4f657f5f778b2ae2a"
-"checksum hmac-drbg 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "4fe727d41d2eec0a6574d887914347e5ff96a3b87177817e2a9820c5c87fecc2"
 "checksum http 0.1.17 (registry+https://github.com/rust-lang/crates.io-index)" = "eed324f0f0daf6ec10c474f150505af2c143f251722bf9dbd1261bd1f2ee2c1a"
 "checksum http-body 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "6741c859c1b2463a423a1dbce98d418e6c3c3fc720fb0d45528657320920292d"
 "checksum httparse 1.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "e8734b0cfd3bc3e101ec59100e101c2eecd19282202e87808b3037b442777a83"
@@ -2460,7 +2369,6 @@ dependencies = [
 "checksum lazy_static 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "76f033c7ad61445c5b347c7382dd1237847eb1bce590fe50365dcb33d546be73"
 "checksum lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "bc5729f27f159ddd61f4df6228e827e86643d4d3e7c32183cb30a1c08f604a14"
 "checksum libc 0.2.55 (registry+https://github.com/rust-lang/crates.io-index)" = "42914d39aad277d9e176efbdad68acb1d5443ab65afe0e0e4f0d49352a950880"
-"checksum libsecp256k1 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "688e8d65e495567c2c35ea0001b26b9debf0b4ea11f8cccc954233b75fc3428a"
 "checksum lock_api 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "62ebf1391f6acad60e5c8b43706dde4582df75c06698ab44511d15016bc2442c"
 "checksum log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)" = "e19e8d5c34a3e0e2223db8e060f9e8264aeeb5c5fc64a4ee9965c062211c024b"
 "checksum log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)" = "c84ec4b527950aa83a329754b01dbe3f58361d1c5efacd1f6d68c494d08a17c6"
@@ -2543,7 +2451,6 @@ dependencies = [
 "checksum serde_urlencoded 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)" = "642dd69105886af2efd227f75a520ec9b44a820d65bc133a9131f7d229fd165a"
 "checksum sgx_types 1.0.8 (git+https://github.com/baidu/rust-sgx-sdk.git?rev=v1.0.8)" = "<none>"
 "checksum sgx_urts 1.0.8 (git+https://github.com/baidu/rust-sgx-sdk.git?rev=v1.0.8)" = "<none>"
-"checksum sha2 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7d963c78ce367df26d7ea8b8cc655c651b42e8a1e584e869c1e17dae3ccb116a"
 "checksum sha2 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7b4d8bfd0e469f417657573d8451fb33d16cfe0989359b93baf3a1ffc639543d"
 "checksum simplelog 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)" = "2e95345f185d5adeb8ec93459d2dc99654e294cc6ccf5b75414d8ea262de9a13"
 "checksum siphasher 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "0b8de496cf83d4ed58b6be86c3a275b8602f6ffe98d3024a869e124147a9a3ac"
diff --git a/enigma-principal/enclave/Cargo.lock b/enigma-principal/enclave/Cargo.lock
index 22ca72a5..e9a7d51d 100644
--- a/enigma-principal/enclave/Cargo.lock
+++ b/enigma-principal/enclave/Cargo.lock
@@ -8,11 +8,6 @@ dependencies = [
  "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "arrayref"
-version = "0.3.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "arrayvec"
 version = "0.4.10"
@@ -41,15 +36,6 @@ name = "bitflags"
 version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "block-buffer"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "byte-tools 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "generic-array 0.8.3 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "block-buffer"
 version = "0.7.3"
@@ -69,11 +55,6 @@ dependencies = [
  "byte-tools 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "byte-tools"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "byte-tools"
 version = "0.3.1"
@@ -141,25 +122,11 @@ dependencies = [
  "bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "constant_time_eq"
-version = "0.1.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "crunchy"
 version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "crypto-mac"
-version = "0.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "constant_time_eq 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "generic-array 0.8.3 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "darling"
 version = "0.9.0"
@@ -192,14 +159,6 @@ dependencies = [
  "syn 0.15.34 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "digest"
-version = "0.6.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "generic-array 0.8.3 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "digest"
 version = "0.8.0"
@@ -219,9 +178,9 @@ version = "0.1.0"
 dependencies = [
  "enigma-types 0.1.0",
  "failure 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "libsecp256k1 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "ring 0.14.6 (git+https://github.com/elichai/ring.git?rev=sgx-0.14.6)",
  "rustc-hex 2.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "secp256k1 0.13.0",
  "sgx_trts 1.0.8 (git+https://github.com/baidu/rust-sgx-sdk.git?rev=v1.0.8)",
  "sgx_tstd 1.0.8 (git+https://github.com/baidu/rust-sgx-sdk.git?rev=v1.0.8)",
  "sgx_types 1.0.8 (git+https://github.com/baidu/rust-sgx-sdk.git?rev=v1.0.8)",
@@ -410,15 +369,6 @@ name = "fuchsia-cprng"
 version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "generic-array"
-version = "0.8.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "nodrop 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
- "typenum 1.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "generic-array"
 version = "0.12.0"
@@ -427,26 +377,6 @@ dependencies = [
  "typenum 1.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "hmac"
-version = "0.4.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "crypto-mac 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "digest 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "generic-array 0.8.3 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "hmac-drbg"
-version = "0.1.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "digest 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "generic-array 0.8.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "hmac 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "ident_case"
 version = "1.0.1"
@@ -489,19 +419,6 @@ name = "libc"
 version = "0.2.55"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "libsecp256k1"
-version = "0.2.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "arrayref 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "digest 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "hmac-drbg 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "rand 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "sha2 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "typenum 1.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "log"
 version = "0.4.6"
@@ -586,17 +503,6 @@ dependencies = [
  "proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "rand"
-version = "0.4.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "fuchsia-cprng 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "rdrand 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "rand"
 version = "0.6.5"
@@ -774,6 +680,13 @@ name = "ryu"
 version = "0.2.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "secp256k1"
+version = "0.13.0"
+dependencies = [
+ "cc 1.0.37 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "serde"
 version = "1.0.91"
@@ -933,18 +846,6 @@ dependencies = [
  "sgx_trts 1.0.8 (git+https://github.com/baidu/rust-sgx-sdk.git?rev=v1.0.8)",
 ]
 
-[[package]]
-name = "sha2"
-version = "0.6.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "block-buffer 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "byte-tools 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "digest 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "fake-simd 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "generic-array 0.8.3 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "sha2"
 version = "0.8.0"
@@ -1116,15 +1017,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
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 "checksum arrayvec 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)" = "92c7fb76bc8826a8b33b4ee5bb07a247a81e76764ab4d55e8f73e3a4d8808c71"
 "checksum atty 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "9a7d5b8723950951411ee34d271d99dddcc2035a16ab25310ea2c8cfd4369652"
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-"checksum block-buffer 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1339a1042f5d9f295737ad4d9a6ab6bf81c84a933dba110b9200cd6d1448b814"
 "checksum block-buffer 0.7.3 (registry+https://github.com/rust-lang/crates.io-index)" = "c0940dc441f31689269e10ac70eb1002a3a1d3ad1390e030043662eb7fe4688b"
 "checksum block-padding 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)" = "6d4dc3af3ee2e12f3e5d224e5e1e3d73668abbeb69e566d361f7d5563a4fdf09"
-"checksum byte-tools 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "560c32574a12a89ecd91f5e742165893f86e3ab98d21f8ea548658eb9eef5f40"
 "checksum byte-tools 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "e3b5ca7a04898ad4bcd41c90c5285445ff5b791899bb1b0abdd2a2aa791211d7"
 "checksum byteorder 1.3.1 (git+https://github.com/mesalock-linux/byteorder-sgx?rev=70965e6bda25f6b77f968684e20b902dc2162a9c)" = "<none>"
 "checksum byteorder 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "a019b10a2a7cdeb292db131fc8113e57ea2a908f6e7894b0c3c671893b65dbeb"
@@ -1133,13 +1031,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)" = "b486ce3ccf7ffd79fdeb678eac06a9e6c09fc88d33836340becb8fffe87c5e33"
 "checksum clap 2.33.0 (registry+https://github.com/rust-lang/crates.io-index)" = "5067f5bb2d80ef5d68b4c87db81601f0b75bca627bc2ef76b141d7b846a3c6d9"
 "checksum cloudabi 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "ddfc5b9aa5d4507acaf872de71051dfd0e309860e88966e1051e462a077aac4f"
-"checksum constant_time_eq 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "8ff012e225ce166d4422e0e78419d901719760f62ae2b7969ca6b564d1b54a9e"
 "checksum crunchy 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "a2f4a431c5c9f662e1200b7c7f02c34e91361150e382089a8f2dec3ba680cbda"
-"checksum crypto-mac 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "779015233ac67d65098614aec748ac1c756ab6677fa2e14cf8b37c08dfed1198"
 "checksum darling 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "fcfbcb0c5961907597a7d1148e3af036268f2b773886b8bb3eeb1e1281d3d3d6"
 "checksum darling_core 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "6afc018370c3bff3eb51f89256a6bdb18b4fdcda72d577982a14954a7a0b402c"
 "checksum darling_macro 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "c6d8dac1c6f1d29a41c4712b4400f878cb4fcc4c7628f298dd75038e024998d1"
-"checksum digest 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)" = "e5b29bf156f3f4b3c4f610a25ff69370616ae6e0657d416de22645483e72af0a"
 "checksum digest 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "05f47366984d3ad862010e22c7ce81a7dbcaebbdfb37241a620f8b6596ee135c"
 "checksum elastic-array-plus 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)" = "562cc8504a01eb20c10fb154abd7c4baeb9beba2329cf85838ee2bd48a468b18"
 "checksum error-chain 0.12.0 (git+https://github.com/enigmampc/error-chain.git?rev=0.12.0-sgx-1.0.8)" = "<none>"
@@ -1156,16 +1051,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum fnv 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)" = "2fad85553e09a6f881f739c29f0b00b0f01357c743266d478b68951ce23285f3"
 "checksum fuchsia-cprng 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "a06f77d526c1a601b7c4cdd98f54b5eaabffc14d5f2f0296febdc7f357c6d3ba"
 "checksum generic-array 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)" = "3c0f28c2f5bfb5960175af447a2da7c18900693738343dc896ffbcabd9839592"
-"checksum generic-array 0.8.3 (registry+https://github.com/rust-lang/crates.io-index)" = "fceb69994e330afed50c93524be68c42fa898c2d9fd4ee8da03bd7363acd26f2"
-"checksum hmac 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7a13f4163aa0c5ca1be584aace0e2212b2e41be5478218d4f657f5f778b2ae2a"
-"checksum hmac-drbg 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "4fe727d41d2eec0a6574d887914347e5ff96a3b87177817e2a9820c5c87fecc2"
 "checksum ident_case 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "b9e0384b61958566e926dc50660321d12159025e767c18e043daf26b70104c39"
 "checksum itoa 0.4.4 (git+https://github.com/mesalock-linux/itoa-sgx.git)" = "<none>"
 "checksum itoa 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)" = "501266b7edd0174f8530248f87f99c88fbe60ca4ef3dd486835b8d8d53136f7f"
 "checksum json-patch 0.2.5 (git+https://github.com/enigmampc/json-patch.git?rev=0.2.5-sgx-1.0.8)" = "<none>"
 "checksum lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "bc5729f27f159ddd61f4df6228e827e86643d4d3e7c32183cb30a1c08f604a14"
 "checksum libc 0.2.55 (registry+https://github.com/rust-lang/crates.io-index)" = "42914d39aad277d9e176efbdad68acb1d5443ab65afe0e0e4f0d49352a950880"
-"checksum libsecp256k1 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "688e8d65e495567c2c35ea0001b26b9debf0b4ea11f8cccc954233b75fc3428a"
 "checksum log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)" = "c84ec4b527950aa83a329754b01dbe3f58361d1c5efacd1f6d68c494d08a17c6"
 "checksum log-derive 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "90b7e153f2d4bf69d46a9e640e2c96573940fca671d275bf6f7687f6bab803fc"
 "checksum memory_units 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "71d96e3f3c0b6325d8ccd83c33b28acb183edcb6c67938ba104ec546854b0882"
@@ -1177,7 +1068,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)" = "cf3d2011ab5c909338f7887f4fc896d35932e29146c12c8d01da6b22a80ba759"
 "checksum pwasm-utils 0.5.0 (git+https://github.com/enigmampc/wasm-utils.git?rev=0.5.0-sgx-1.0.8)" = "<none>"
 "checksum quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)" = "faf4799c5d274f3868a4aae320a0a182cbd2baee377b378f080e16a23e9d80db"
-"checksum rand 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)" = "552840b97013b1a26992c11eac34bdd778e464601a4c2054b5f0bff7c6761293"
 "checksum rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)" = "6d71dacdc3c88c1fde3885a3be3fbab9f35724e6ce99467f7d9c5026132184ca"
 "checksum rand_chacha 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "556d3a1ca6600bfcbab7c7c91ccb085ac7fbbcd70e008a98742e7847f4f7bcef"
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@@ -1216,7 +1106,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum sgx_tunittest 1.0.8 (git+https://github.com/baidu/rust-sgx-sdk.git?rev=v1.0.8)" = "<none>"
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 "checksum sgx_unwind 0.0.1 (git+https://github.com/baidu/rust-sgx-sdk.git?rev=v1.0.8)" = "<none>"
-"checksum sha2 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7d963c78ce367df26d7ea8b8cc655c651b42e8a1e584e869c1e17dae3ccb116a"
 "checksum sha2 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7b4d8bfd0e469f417657573d8451fb33d16cfe0989359b93baf3a1ffc639543d"
 "checksum spin 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "44363f6f51401c34e7be73db0db371c04705d35efbe9f7d6082e03a921a32c55"
 "checksum strsim 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "bb4f380125926a99e52bc279241539c018323fab05ad6368b56f93d9369ff550"