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evp_md.go
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evp_md.go
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package openssl
// #include "openssl/opensslv.h"
// #include "shim.h"
import "C"
// EVP_MD represents hash function implemented by OpenSSL
type EVP_MD int
const (
EVP_NULL EVP_MD = iota
EVP_MD5
EVP_MD4
EVP_SHA
EVP_SHA1
EVP_DSS
EVP_DSS1
EVP_MDC2
EVP_RIPEMD160
EVP_SHA224
EVP_SHA256
EVP_SHA384
EVP_SHA512
EVP_SHA512_224
EVP_SHA512_256
EVP_BLAKE2B_512
EVP_BLAKE2S_256
EVP_GOST
EVP_MD2
EVP_SHA3_224
EVP_SHA3_256
EVP_SHA3_384
EVP_SHA3_512
EVP_SHAKE128
EVP_SHAKE256
EVP_SM3
EVP_WHIRLPOOL
)
// Size returns the size of the digest
func (evp EVP_MD) Size() int {
var bits int
switch evp {
case EVP_BLAKE2B_512:
bits = 512
case EVP_BLAKE2S_256:
bits = 256
case EVP_GOST:
bits = 256
case EVP_MD2:
bits = 128
case EVP_MD4:
bits = 128
case EVP_MD5:
bits = 128
case EVP_RIPEMD160:
bits = 160
case EVP_SHA1:
bits = 160
case EVP_SHA224:
bits = 224
case EVP_SHA256:
bits = 256
case EVP_SHA384:
bits = 384
case EVP_SHA512:
bits = 512
case EVP_SHA512_224:
bits = 224
case EVP_SHA512_256:
bits = 256
case EVP_SHA3_224:
bits = 224
case EVP_SHA3_256:
bits = 256
case EVP_SHA3_384:
bits = 384
case EVP_SHA3_512:
bits = 512
case EVP_SHAKE128:
bits = 128
case EVP_SHAKE256:
bits = 256
case EVP_SM3:
bits = 256
}
return bits / 8
}
// Size returns hash function block size in bytes
func (evp EVP_MD) BlockSize() int {
var bits int
switch evp {
case EVP_BLAKE2B_512:
bits = 1024
case EVP_BLAKE2S_256:
bits = 512
case EVP_GOST:
bits = 256
case EVP_MD2:
bits = 128
case EVP_MD4:
bits = 512
case EVP_MD5:
bits = 512
case EVP_RIPEMD160:
bits = 512
case EVP_SHA1:
bits = 512
case EVP_SHA224:
bits = 512
case EVP_SHA256:
bits = 512
case EVP_SHA384:
bits = 1024
case EVP_SHA512:
bits = 1024
case EVP_SHA512_224:
bits = 1024
case EVP_SHA512_256:
bits = 1024
case EVP_SHA3_224:
bits = 1124
case EVP_SHA3_256:
bits = 1088
case EVP_SHA3_384:
bits = 832
case EVP_SHA3_512:
bits = 576
case EVP_SHAKE128:
bits = 1344
case EVP_SHAKE256:
bits = 1088
case EVP_SM3:
bits = 512
}
return bits / 8
}
func (evp EVP_MD) String() string {
switch evp {
case EVP_BLAKE2B_512:
return "BLAKE2B_512"
case EVP_BLAKE2S_256:
return "BLAKE2S_256"
case EVP_GOST:
return "GOST"
case EVP_MD2:
return "MD2"
case EVP_MD4:
return "MD4"
case EVP_MD5:
return "MD5"
case EVP_RIPEMD160:
return "RMD160"
case EVP_SHA1:
return "SHA1"
case EVP_SHA224:
return "SHA224"
case EVP_SHA256:
return "SHA256"
case EVP_SHA384:
return "SHA384"
case EVP_SHA512:
return "SHA512"
case EVP_SHA512_224:
return "SHA512_224"
case EVP_SHA512_256:
return "SHA512_256"
case EVP_SHA3_224:
return "SHA3_224"
case EVP_SHA3_256:
return "SHA3_256"
case EVP_SHA3_384:
return "SHA3_384"
case EVP_SHA3_512:
return "SHA3_512"
case EVP_SHAKE128:
return "SHAKE128"
case EVP_SHAKE256:
return "SHAKE256"
case EVP_SM3:
return "SM3"
default:
return "UNKNOWN"
}
}
/*
OpenSSL compatibility table:
1.1.1 -> 0x1010100fL
1.1.0 -> 0x1010000fL
Digest 1.0.2 1.1.0 1.1.1
BLAKE2B512 - + +
BLAKE2S256 - + +
GOST - + +
MD2 - + +
MD4 + + +
MD5 + + +
RIPEMD160 + + +
SHA1 + + +
SHA224 + + +
SHA256 + + +
SHA384 + + +
SHA512 + + +
SHA512-224 - - +
SHA512-256 - - +
SHA3-224 - - +
SHA3-256 - - +
SHA3-384 - - +
SHA3-512 - - +
SHAKE128 - - +
SHAKE256 - - +
SM3 - - +
WHIRLPOOL + + +
*/
var hashFunctionsOpenSSLv111 = map[EVP_MD]bool{
EVP_BLAKE2B_512: true,
EVP_BLAKE2S_256: true,
EVP_GOST: true,
EVP_MD2: true,
EVP_MD4: true,
EVP_MD5: true,
EVP_RIPEMD160: true,
EVP_SHA1: true,
EVP_SHA224: true,
EVP_SHA256: true,
EVP_SHA384: true,
EVP_SHA512: true,
EVP_SHA512_224: true,
EVP_SHA512_256: true,
EVP_SHA3_224: true,
EVP_SHA3_256: true,
EVP_SHA3_384: true,
EVP_SHA3_512: true,
EVP_SHAKE128: true,
EVP_SHAKE256: true,
EVP_SM3: true,
EVP_WHIRLPOOL: true,
}
var hashFunctionsOpenSSLv110 = map[EVP_MD]bool{
EVP_BLAKE2B_512: true,
EVP_BLAKE2S_256: true,
EVP_GOST: true,
EVP_MD2: true,
EVP_MD4: true,
EVP_MD5: true,
EVP_RIPEMD160: true,
EVP_SHA1: true,
EVP_SHA224: true,
EVP_SHA256: true,
EVP_SHA384: true,
EVP_SHA512: true,
EVP_SHA512_224: false,
EVP_SHA512_256: false,
EVP_SHA3_224: false,
EVP_SHA3_256: false,
EVP_SHA3_384: false,
EVP_SHA3_512: false,
EVP_SHAKE128: false,
EVP_SHAKE256: false,
EVP_SM3: false,
EVP_WHIRLPOOL: true,
}
var hashFunctionsOpenSSLv102 = map[EVP_MD]bool{
EVP_BLAKE2B_512: false,
EVP_BLAKE2S_256: false,
EVP_GOST: false,
EVP_MD2: false,
EVP_MD4: true,
EVP_MD5: true,
EVP_RIPEMD160: true,
EVP_SHA1: true,
EVP_SHA224: true,
EVP_SHA256: true,
EVP_SHA384: true,
EVP_SHA512: true,
EVP_SHA512_224: false,
EVP_SHA512_256: false,
EVP_SHA3_224: false,
EVP_SHA3_256: false,
EVP_SHA3_384: false,
EVP_SHA3_512: false,
EVP_SHAKE128: false,
EVP_SHAKE256: false,
EVP_SM3: false,
EVP_WHIRLPOOL: true,
}
// Supported checks if this hash function is supported by the installed version of OpenSSL
func (evp EVP_MD) Supported() bool {
if C.OPENSSL_VERSION_NUMBER >= 0x1010100f {
return hashFunctionsOpenSSLv111[evp]
} else if C.OPENSSL_VERSION_NUMBER >= 0x1010000f {
return hashFunctionsOpenSSLv110[evp]
}
return hashFunctionsOpenSSLv102[evp]
}
// c returns pointer to the struct that is used during digest initialization
func (evp EVP_MD) c() (evpMD *C.EVP_MD) {
switch evp {
case EVP_BLAKE2B_512:
evpMD = C.X_EVP_blake2b512()
case EVP_BLAKE2S_256:
evpMD = C.X_EVP_blake2s256()
case EVP_GOST:
panic("Not implemented yet")
case EVP_MD2:
evpMD = C.X_EVP_md2()
case EVP_MD4:
evpMD = C.X_EVP_md4()
case EVP_MD5:
evpMD = C.X_EVP_md5()
case EVP_RIPEMD160:
evpMD = C.X_EVP_ripemd160()
case EVP_SHA1:
evpMD = C.X_EVP_sha1()
case EVP_SHA224:
evpMD = C.X_EVP_sha224()
case EVP_SHA256:
evpMD = C.X_EVP_sha256()
case EVP_SHA384:
evpMD = C.X_EVP_sha384()
case EVP_SHA512:
evpMD = C.X_EVP_sha512()
case EVP_SHA512_224:
evpMD = C.X_EVP_sha512_224()
case EVP_SHA512_256:
evpMD = C.X_EVP_sha512_256()
case EVP_SHA3_224:
evpMD = C.X_EVP_sha3_224()
case EVP_SHA3_256:
evpMD = C.X_EVP_sha3_256()
case EVP_SHA3_384:
evpMD = C.X_EVP_sha3_384()
case EVP_SHA3_512:
evpMD = C.X_EVP_sha3_512()
case EVP_SHAKE128:
evpMD = C.X_EVP_shake128()
case EVP_SHAKE256:
evpMD = C.X_EVP_shake256()
case EVP_SM3:
panic("Not implemented yet")
default:
panic("Not implemented yet")
}
return
}