33 lines
943 B
Go
33 lines
943 B
Go
// SPDX-Licence-Identifier: EUPL-1.2
|
|
|
|
package crypto
|
|
|
|
/*
|
|
#cgo CPPFLAGS: -I${SRCDIR}/upstream -I${SRCDIR}/compat -I${SRCDIR}/randomx
|
|
#cgo LDFLAGS: -L${SRCDIR}/build -lcryptonote -lrandomx -lstdc++ -lpthread
|
|
#include "bridge.h"
|
|
*/
|
|
import "C"
|
|
|
|
import "unsafe"
|
|
|
|
// FastHash computes the CryptoNote fast hash (Keccak-256) of the input.
|
|
// Usage: crypto.FastHash(...)
|
|
func FastHash(data []byte) [32]byte {
|
|
var hash [32]byte
|
|
if len(data) == 0 {
|
|
C.bridge_fast_hash(nil, 0, (*C.uint8_t)(unsafe.Pointer(&hash[0])))
|
|
} else {
|
|
C.bridge_fast_hash((*C.uint8_t)(unsafe.Pointer(&data[0])),
|
|
C.size_t(len(data)),
|
|
(*C.uint8_t)(unsafe.Pointer(&hash[0])))
|
|
}
|
|
return hash
|
|
}
|
|
|
|
// ScReduce32 reduces a 32-byte value modulo the Ed25519 group order l.
|
|
// This is required when converting a hash output to a valid secret key scalar.
|
|
// Usage: crypto.ScReduce32(...)
|
|
func ScReduce32(key *[32]byte) {
|
|
C.cn_sc_reduce32((*C.uint8_t)(unsafe.Pointer(&key[0])))
|
|
}
|