cryptoutils

func CryptCBC ¶

func CryptCBC(blockCipher cipher.Block, iv []byte, data []byte, encrypt bool) []byte

func CryptoHash ¶

func CryptoHash(alg crypto.Hash, data []byte) []byte

func CryptoHashByOid ¶

func CryptoHashByOid(oid asn1.ObjectIdentifier, data []byte) []byte

hashes the data using the hash algorithm specified by oid panics if hash algorithm is not supported

func CryptoHashDigestSize ¶

func CryptoHashDigestSize(alg crypto.Hash) int

func CryptoHashOidToAlg ¶

func CryptoHashOidToAlg(oid asn1.ObjectIdentifier) crypto.Hash

panics if hash algorithm is not supported

func DesKeyAdjustParity ¶

func DesKeyAdjustParity(key []byte) []byte

func EllipticP192 ¶

func EllipticP192() elliptic.Curve

support for P192 (secp-192r1) which is required by some countries but not supported by the go libraries

func EncodeX962EcPoint ¶

func EncodeX962EcPoint(ec elliptic.Curve, point *EcPoint) []byte

func GetCipherForKey ¶

func GetCipherForKey(alg BlockCipherAlg, key []byte) (cipher.Block, error)

NB supports 8/16/24 byte key lengths for DES

func ISO9797Method2Pad ¶

func ISO9797Method2Pad(data []byte, blockSize int) []byte

func ISO9797Method2Unpad ¶

func ISO9797Method2Unpad(data []byte) []byte

panics if data is not padded

func ISO9797RetailMacDes ¶

func ISO9797RetailMacDes(key []byte, data []byte) (mac []byte, err error)

ISO-9797 Retail MAC (DES) key: 16 bytes (double) DES key error: if invalid key length (not 16 bytes) or data not aligned to block boundary (8 bytes)

func KDF ¶

func KDF(k []byte, c KDFCounterType, alg BlockCipherAlg, keySizeBits int) []byte

NB expects keySizeBits=112 for TDES

func RandomBytes ¶

func RandomBytes(length int) []byte

func RsaDecryptWithPublicKey ¶

func RsaDecryptWithPublicKey(ciphertext []byte, publicKey RsaPublicKey) []byte