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comparison app/src/main/java/ch/ethz/ssh2/crypto/digest/HMAC.java @ 510:7953570e5210

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update to ganymed-ssh2 tag 263 and fix hmac-sha2-512
author Carl Byington <carl@five-ten-sg.com>
date Wed, 01 Feb 2023 17:55:29 -0700
parents d29cce60f393
children
comparison
equal deleted inserted replaced
509:2eb4fa13b9ef 510:7953570e5210
19 19
20 byte[] tmp; 20 byte[] tmp;
21 21
22 int size; 22 int size;
23 23
24 public HMAC(Digest md, byte[] key, int size) throws DigestException { 24 public HMAC(Digest md, byte[] key, int digestsize, int blocksize) throws DigestException {
25 this.md = md; 25 this.md = md;
26 this.size = size; 26 this.size = digestsize;
27 tmp = new byte[md.getDigestLength()]; 27 tmp = new byte[md.getDigestLength()];
28 final int BLOCKSIZE = 64; 28 k_xor_ipad = new byte[blocksize];
29 k_xor_ipad = new byte[BLOCKSIZE]; 29 k_xor_opad = new byte[blocksize];
30 k_xor_opad = new byte[BLOCKSIZE];
31 30
32 if (key.length > BLOCKSIZE) { 31 if (key.length > blocksize) {
33 md.reset(); 32 md.reset();
34 md.update(key); 33 md.update(key);
35 md.digest(tmp); 34 md.digest(tmp);
36 key = tmp; 35 key = tmp;
37 } 36 }
38 37
39 System.arraycopy(key, 0, k_xor_ipad, 0, key.length); 38 System.arraycopy(key, 0, k_xor_ipad, 0, key.length);
40 System.arraycopy(key, 0, k_xor_opad, 0, key.length); 39 System.arraycopy(key, 0, k_xor_opad, 0, key.length);
41 40
42 for (int i = 0; i < BLOCKSIZE; i++) { 41 for (int i = 0; i < blocksize; i++) {
43 k_xor_ipad[i] ^= 0x36; 42 k_xor_ipad[i] ^= 0x36;
44 k_xor_opad[i] ^= 0x5C; 43 k_xor_opad[i] ^= 0x5C;
45 } 44 }
46 45
47 md.update(k_xor_ipad); 46 md.update(k_xor_ipad);