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60 lines
1.3 KiB
Go
60 lines
1.3 KiB
Go
// +build amd64
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package sha256
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// #include <stdint.h>
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// void sha256_transform_avx (uint8_t *input_data, uint32_t digest[8], uint64_t num_blks);
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// void sha256_transform_ssse3 (uint8_t *input_data, uint32_t digest[8], uint64_t num_blks);
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// void sha256_transform_rorx (uint8_t *input_data, uint32_t digest[8], uint64_t num_blks);
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// #define SHA256_DIGEST_SIZE 32
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// #define SHA256_BLOCK_SIZE 64
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// #define SHA256_H0 0x6a09e667UL
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// #define SHA256_H1 0xbb67ae85UL
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// #define SHA256_H2 0x3c6ef372UL
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// #define SHA256_H3 0xa54ff53aUL
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// #define SHA256_H4 0x510e527fUL
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// #define SHA256_H5 0x9b05688cUL
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// #define SHA256_H6 0x1f83d9abUL
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// #define SHA256_H7 0x5be0cd19UL
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import "C"
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import (
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gosha256 "crypto/sha256"
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"io"
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)
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/*
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func Sha256(buffer []byte) ([]uint32, error) {
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if cpu.HasSSE41() {
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C.sha256_transform_ssse3()
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return 0, nil
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}
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if cpu.HasAVX() {
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C.sha256_transform_avx()
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return 0, nil
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}
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if cpu.HasAVX2() {
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C.sha256_transform_rorx()
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return 0, nil
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}
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}
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*/
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func Sum(reader io.Reader) ([]byte, error) {
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hash := gosha256.New()
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var err error
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for err == nil {
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length := 0
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byteBuffer := make([]byte, 1024*1024)
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length, err = reader.Read(byteBuffer)
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byteBuffer = byteBuffer[0:length]
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hash.Write(byteBuffer)
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}
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if err != io.EOF {
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return nil, err
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}
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return hash.Sum(nil), nil
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}
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