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s.matthew.english b0aaf68e31 Add extension to README files render markdown, readability improvemewnts to core/quorum/ 
Remove unused TestBlockVotingBlockMaker function

Readability improvments to comments for core/quorum/ and raft/

Readability improvments to raft/speculative_chain.go

Readability improvments to docs/
 		2017-06-09 10:59:09 +02:00
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.gitignore Add 'crypto/ecies/' from commit '7c0f4a9b18d992166452d8cd32caaefd92b26386' 2015-02-13 23:45:38 +01:00
LICENSE Add 'crypto/ecies/' from commit '7c0f4a9b18d992166452d8cd32caaefd92b26386' 2015-02-13 23:45:38 +01:00
README.md Add extension to README files render markdown, readability improvemewnts to core/quorum/ 2017-06-09 10:59:09 +02:00
asn1.go crypto, crypto/ecies, crypto/secp256k1: libsecp256k1 scalar mult 2015-11-30 13:43:32 +01:00
ecies.go all: fix go vet warnings 2016-04-15 11:17:27 +02:00
ecies_test.go crypto/ecies: make authenticated shared data work 2016-02-12 09:49:18 +01:00
params.go crypto, crypto/ecies, crypto/secp256k1: libsecp256k1 scalar mult 2015-11-30 13:43:32 +01:00

README.md

NOTE

This implementation is direct fork of Kylom's implementation. I claim no authorship over this code apart from some minor modifications. Please be aware this code has not yet been reviewed.

ecies implements the Elliptic Curve Integrated Encryption Scheme.

The package is designed to be compliant with the appropriate NIST standards, and therefore doesn't support the full SEC 1 algorithm set.

STATUS:

ecies should be ready for use. The ASN.1 support is only complete so far as to supported the listed algorithms before.

CAVEATS

  1. CMAC support is currently not present.

SUPPORTED ALGORITHMS

    SYMMETRIC CIPHERS               HASH FUNCTIONS
         AES128                         SHA-1
         AES192                        SHA-224
         AES256                        SHA-256
                                       SHA-384
    ELLIPTIC CURVE                     SHA-512
         P256
         P384		    KEY DERIVATION FUNCTION
         P521	       NIST SP 800-65a Concatenation KDF

Curve P224 isn't supported because it does not provide a minimum security level of AES128 with HMAC-SHA1. According to NIST SP 800-57, the security level of P224 is 112 bits of security. Symmetric ciphers use CTR-mode; message tags are computed using HMAC- function.

CURVE SELECTION

According to NIST SP 800-57, the following curves should be selected:

+----------------+-------+
| SYMMETRIC SIZE | CURVE |
+----------------+-------+
|     128-bit    |  P256 |
+----------------+-------+
|     192-bit    |  P384 |
+----------------+-------+
|     256-bit    |  P521 |
+----------------+-------+

TODO

  1. Look at serialising the parameters with the SEC 1 ASN.1 module.
  2. Validate ASN.1 formats with SEC 1.

TEST VECTORS

The only test vectors I've found so far date from 1993, predating AES and including only 163-bit curves. Therefore, there are no published test vectors to compare to.

LICENSE

ecies is released under the same license as the Go source code. See the LICENSE file for details.

REFERENCES