Implement parsing GPG keys

.github/workflows/build.yml

@@ -18,6 +18,11 @@ jobs:
       with:
         submodules: true
 
+    - name: Install additional build dependencies
+      run: |
+        sudo apt-get update
+        sudo apt-get install nettle-dev capnproto
+
     - name: Cache Cargo registry and build artifacts
       uses: actions/cache@v2
       with:

.gitignore

@@ -1,2 +1,4 @@
 /target
 Cargo.lock
+
+.vscode

Cargo.toml

@@ -7,16 +7,14 @@ license = "Apache-2.0"
 description = "Core library for Verifiable Credentials and Decentralized Identifiers."
 repository = "https://github.com/spruceid/ssi/"
 documentation = "https://docs.rs/ssi/"
+resolver = "2"
 
-exclude = [
-  "json-ld-api/*",
-  "json-ld-normalization/*",
-]
+exclude = ["json-ld-api/*", "json-ld-normalization/*"]
 
 [features]
 default = ["ring"]
 http-did = ["hyper", "hyper-tls", "http", "percent-encoding", "tokio"]
-libsecp256k1 = ["secp256k1"] # backward compatibility
+libsecp256k1 = ["secp256k1"]                                           # backward compatibility
 secp256k1 = ["k256", "rand", "k256/keccak256"]
 secp256r1 = ["p256", "rand"]
 ripemd-160 = ["ripemd160", "secp256k1"]
@@ -58,7 +56,12 @@ lazy_static = "1.4"
 combination = "0.1"
 sha2 = { version = "0.9", optional = true }
 sha2_old = { package = "sha2", version = "0.8" }
-hyper = { version = "0.14", optional = true, features = ["server", "client", "http1", "stream"] }
+hyper = { version = "0.14", optional = true, features = [
+  "server",
+  "client",
+  "http1",
+  "stream",
+] }
 hyper-tls = { version = "0.5", optional = true }
 http = { version = "0.2", optional = true }
 hex = "0.4"
@@ -106,7 +109,7 @@ members = [
 ]
 
 [dev-dependencies]
-blake2 = "0.8" # for bbs doctest
+blake2 = "0.8"                                         # for bbs doctest
 uuid = { version = "0.8", features = ["v4", "serde"] }
 difference = "2.0"
 did-method-key = { path = "./did-key" }

README.md

@@ -1,4 +1,7 @@
-[![](https://img.shields.io/github/workflow/status/spruceid/ssi/ci)](https://github.com/spruceid/ssi/actions?query=workflow%3Aci+branch%3Amain) [![](https://img.shields.io/badge/Rust-v1.51.0-orange)](https://www.rust-lang.org/) [![](https://img.shields.io/badge/License-Apache--2.0-green)](https://github.com/spruceid/didkit/blob/main/LICENSE) [![](https://img.shields.io/twitter/follow/sprucesystems?label=Follow&style=social)](https://twitter.com/sprucesystems) 
+[![](https://img.shields.io/github/workflow/status/spruceid/ssi/ci)](https://github.com/spruceid/ssi/actions?query=workflow%3Aci+branch%3Amain)
+[![](https://img.shields.io/badge/Rust-v1.51.0-orange)](https://www.rust-lang.org/)
+[![](https://img.shields.io/badge/License-Apache--2.0-green)](https://github.com/spruceid/didkit/blob/main/LICENSE)
+[![](https://img.shields.io/twitter/follow/sprucesystems?label=Follow&style=social)](https://twitter.com/sprucesystems)
 
 SSI's documentation is currently packaged with the DIDKit documentation
 [here](https://spruceid.dev/docs/didkit/).
@@ -14,8 +17,9 @@ including embedded systems. This library is embedded in the the cross-platform
 ![DIDKit core components](https://user-images.githubusercontent.com/37127325/132885372-9cdf586e-ba6f-44c8-8b83-f72f16d86107.png)
 
 ## Maturity Disclaimer
-In the v0.1 release on January 27th, 2021, SSI has not yet undergone a
-formal security audit and to desired levels of confidence for suitable use in
+
+In the v0.1 release on January 27th, 2021, SSI has not yet undergone a formal
+security audit and to desired levels of confidence for suitable use in
 production systems. This implementation is currently suitable for exploratory
 work and experimentation only. We welcome feedback on the usability,
 architecture, and security of this implementation and are committed to a
@@ -36,6 +40,18 @@ clang
 openssl-devel
 ```
 
+If using feature `did-webkey/sequoia-openpgp` for PGP support, the following
+dependencies are also needed:
+
+```
+nettle-dev
+capnproto
+```
+
+If using feature
+[`did-webkey/crypto-cng`](https://gitlab.com/sequoia-pgp/sequoia#cryptography),
+only `capnproto` is needed.
+
 ## Install
 
 ### Crates.io

did-webkey/Cargo.toml

@@ -12,23 +12,48 @@ homepage = "https://github.com/spruceid/ssi/tree/main/did-webkey/"
 documentation = "https://docs.rs/did-webkey/"
 
 [features]
+default = ["ssi/ring", "crypto-nettle"]
+crypto-cng = ["sequoia-openpgp/crypto-cng"]
+crypto-nettle = ["sequoia-openpgp/crypto-nettle"]
 p256 = ["ssi/p256"]
 
 [dependencies]
-ssi = { version = "0.3", path = "../", default-features = false }
-async-trait = "0.1"
-reqwest = { version = "0.11", features = ["json"] }
-http = "0.2"
-serde_json = "1.0"
-serde = { version = "1.0", features = ["derive"] }
-sshkeys = "0.3"
+ssi = { version = "0.3", path = "../", default-features = false, features = [
+    "secp256r1",
+] }
+anyhow = "1.0.52"
+async-trait = "0.1.52"
+reqwest = { version = "0.11.9", features = ["json"] }
+hex = "0.4.3"
+http = "0.2.6"
+serde_json = "1.0.75"
+serde = { version = "1.0.134", features = ["derive"] }
+sshkeys = "0.3.1"
+
+[target.'cfg(not(target_arch = "wasm32"))'.dependencies]
+sequoia-openpgp = { version = "1.7.0", features = [
+    "compression-deflate",
+], default-features = false, optional = true }
+
+[target.'cfg(target_arch = "wasm32")'.dependencies]
+sequoia-openpgp = { version = "1.7.0", default-features = false, features = [
+    "crypto-rust",
+    "allow-experimental-crypto",
+    "allow-variable-time-crypto",
+] }
+
 
 [target.'cfg(target_os = "android")'.dependencies.reqwest]
-version = "0.11"
+version = "0.11.9"
 features = ["json", "native-tls-vendored"]
 
 [dev-dependencies]
-tokio = { version = "1.0", features = ["macros"] }
-async-std = { version = "1.9", features = ["attributes"] }
-futures = "0.3"
-hyper = { version = "0.14", features = ["server", "client", "http1", "stream"] }
+tokio = { version = "1.15.0", features = ["macros"] }
+async-std = { version = "1.10.0", features = ["attributes"] }
+futures = "0.3.19"
+hyper = { version = "0.14.16", features = [
+    "server",
+    "client",
+    "http1",
+    "stream",
+] }