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hub / github.com/ElementsProject/elements / CHMAC_SHA256

Method CHMAC_SHA256

src/crypto/hmac_sha256.cpp:9–27  ·  view source on GitHub ↗

Source from the content-addressed store, hash-verified

7#include <string.h>
8
9CHMAC_SHA256::CHMAC_SHA256(const unsigned char* key, size_t keylen)
10{
11 unsigned char rkey[64];
12 if (keylen <= 64) {
13 memcpy(rkey, key, keylen);
14 memset(rkey + keylen, 0, 64 - keylen);
15 } else {
16 CSHA256().Write(key, keylen).Finalize(rkey);
17 memset(rkey + 32, 0, 32);
18 }
19
20 for (int n = 0; n < 64; n++)
21 rkey[n] ^= 0x5c;
22 outer.Write(rkey, 64);
23
24 for (int n = 0; n < 64; n++)
25 rkey[n] ^= 0x5c ^ 0x36;
26 inner.Write(rkey, 64);
27}
28
29void CHMAC_SHA256::Finalize(unsigned char hash[OUTPUT_SIZE])
30{

Callers

nothing calls this directly

Calls 3

CSHA256Class · 0.85
FinalizeMethod · 0.45
WriteMethod · 0.45

Tested by

no test coverage detected