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54 lines
2.1 KiB
Go
54 lines
2.1 KiB
Go
/*
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Package crypto provides an interface to VM cryptographic instructions and syscalls.
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*/
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package crypto
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// SHA1 computes SHA1 hash of b. It uses `SHA1` VM instruction.
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func SHA1(b []byte) []byte {
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return nil
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}
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// SHA256 computes SHA256 hash of b. It uses `SHA256` VM instruction.
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func SHA256(b []byte) []byte {
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return nil
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}
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// Hash160 computes SHA256 + RIPEMD-160 of b, which is commonly used for
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// script hashing and address generation. It uses `HASH160` VM instruction.
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func Hash160(b []byte) []byte {
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return nil
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}
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// Hash256 computes double SHA256 hash of b (SHA256(SHA256(b))) which is used
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// as ID for transactions, blocks and assets. It uses `HASH256` VM instruction.
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func Hash256(b []byte) []byte {
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return nil
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}
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// VerifySignature checks that sig is correct msg's signature for a given pub
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// (serialized public key). It uses `VERIFY` VM instruction.
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func VerifySignature(msg []byte, sig []byte, pub []byte) bool {
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return false
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}
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// Secp256k1Recover recovers public key from the given signature (r, s) on the
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// given message hash using Secp256k1 elliptic curve. Flag isEven denotes Y's
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// least significant bit in decompression algorithm. The return value is byte
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// array representation of the public key which is either empty (if it's not
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// possible to recover key) or contains 64 bytes with X and Y coordinates (both
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// 32-byte in BE format). This function uses Neo.Cryptography.Secp256k1Recover
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// syscall.
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func Secp256k1Recover(r []byte, s []byte, messageHash []byte, isEven bool) []byte {
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return nil
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}
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// Secp256r1Recover recovers public key from the given signature (r, s) on the
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// given message hash using Secp256r1 elliptic curve. Flag isEven denotes Y's
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// least significant bit in decompression algorithm. The return value is byte
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// array representation of the public key which is either empty (if it's not
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// possible to recover key) or contains 64 bytes with X and Y coordinates (both
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// 32-byte in BE format). This function uses Neo.Cryptography.Secp256r1Recover
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// syscall.
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func Secp256r1Recover(r []byte, s []byte, messageHash []byte, isEven bool) []byte {
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return nil
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}
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