20 	u8 buffer[MD4_BLOCK_LENGTH];	/* input buffer */
25 static void MD4Update(MD4_CTX *ctx, const unsigned char *input, size_t len);
35 		return -1;  in md4_vector()
45 /* ===== start - public domain MD4 implementation ===== */
49  * This code implements the MD4 message-digest algorithm.
63  * will fill a supplied 16-byte array with the digest.
100 	ctx->count = 0;  in MD4Init()
101 	ctx->state[0] = 0x67452301;  in MD4Init()
102 	ctx->state[1] = 0xefcdab89;  in MD4Init()
103 	ctx->state[2] = 0x98badcfe;  in MD4Init()
104 	ctx->state[3] = 0x10325476;  in MD4Init()
111 static void MD4Update(MD4_CTX *ctx, const unsigned char *input, size_t len)  in MD4Update()  argument
116 	have = (size_t)((ctx->count >> 3) & (MD4_BLOCK_LENGTH - 1));  in MD4Update()
117 	need = MD4_BLOCK_LENGTH - have;  in MD4Update()
120 	ctx->count += (u64)len << 3;  in MD4Update()
124 			os_memcpy(ctx->buffer + have, input, need);  in MD4Update()
125 			MD4Transform(ctx->state, ctx->buffer);  in MD4Update()
126 			input += need;  in MD4Update()
127 			len -= need;  in MD4Update()
131 		/* Process data in MD4_BLOCK_LENGTH-byte chunks. */  in MD4Update()
133 			MD4Transform(ctx->state, input);  in MD4Update()
134 			input += MD4_BLOCK_LENGTH;  in MD4Update()
135 			len -= MD4_BLOCK_LENGTH;  in MD4Update()
141 		os_memcpy(ctx->buffer + have, input, len);  in MD4Update()
145  * Pad pad to 64-byte boundary with the bit pattern
146  * 1 0* (64-bit count of bits processed, MSB-first)
154 	PUT_64BIT_LE(count, ctx->count);  in MD4Pad()
157 	padlen = MD4_BLOCK_LENGTH -  in MD4Pad()
158 	    ((ctx->count >> 3) & (MD4_BLOCK_LENGTH - 1));  in MD4Pad()
161 	MD4Update(ctx, PADDING, padlen - 8);		/* padlen - 8 <= 64 */  in MD4Pad()
166  * Final wrapup--call MD4Pad, fill in digest and zero out ctx.
175 			PUT_32BIT_LE(digest + i * 4, ctx->state[i]);  in MD4Final()
181 /* The three core functions - F1 is optimized somewhat */
190 	( w += f(x, y, z) + data,  w = w<<s | w>>(32-s) )
222 	MD4STEP(F1, b, c, d, a, in[ 3], 19);  in MD4Transform()
226 	MD4STEP(F1, b, c, d, a, in[ 7], 19);  in MD4Transform()
230 	MD4STEP(F1, b, c, d, a, in[11], 19);  in MD4Transform()
234 	MD4STEP(F1, b, c, d, a, in[15], 19);  in MD4Transform()
275 /* ===== end - public domain MD4 implementation ===== */