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e_rc4_hmac_md5.c

Absolute File Name:/home/opencoverage/opencoverage/guest-scripts/openssl/src/crypto/evp/e_rc4_hmac_md5.c
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1-
2-
3-
4-
5-
6-
7typedef struct {-
8 RC4_KEY ks;-
9 MD5_CTX head, tail, md;-
10 size_t payload_length;-
11} EVP_RC4_HMAC_MD5;-
12-
13-
14-
15void rc4_md5_enc(RC4_KEY *key, const void *in0, void *out,-
16 MD5_CTX *ctx, const void *inp, size_t blocks);-
17-
18-
19-
20static int rc4_hmac_md5_init_key(EVP_CIPHER_CTX *ctx,-
21 const unsigned char *inkey,-
22 const unsigned char *iv, int enc)-
23{-
24 EVP_RC4_HMAC_MD5 *key = ((EVP_RC4_HMAC_MD5 *)EVP_CIPHER_CTX_get_cipher_data(ctx));-
25-
26 RC4_set_key(&key->ks, EVP_CIPHER_CTX_key_length(ctx), inkey);-
27-
28 MD5_Init(&key->head);-
29 key->tail = key->head;-
30 key->md = key->head;-
31-
32 key->payload_length = ((size_t)-1);-
33-
34 return
never executed: return 1;
 1;
never executed: return 1;
0
35}-
36static int rc4_hmac_md5_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,-
37 const unsigned char *in, size_t len)-
38{-
39 EVP_RC4_HMAC_MD5 *key = ((EVP_RC4_HMAC_MD5 *)EVP_CIPHER_CTX_get_cipher_data(ctx));-
40-
41 size_t rc4_off = 32 - 1 - (key->ks.x & (32 - 1)),-
42-
43 md5_off = 64 - key->md.num, blocks;-
44 unsigned int l;-
45 extern unsigned int OPENSSL_ia32cap_P[];-
46-
47 size_t plen = key->payload_length;-
48-
49 if (plen != ((size_t)-1)
plen != ((size_t)-1)Description
TRUEnever evaluated
FALSEnever evaluated
 && len != (plen + 16)
len != (plen + 16)Description
TRUEnever evaluated
FALSEnever evaluated
)		0
50 return
never executed: return 0;
 0;
never executed: return 0;
0
51-
52 if (EVP_CIPHER_CTX_encrypting(ctx)
EVP_CIPHER_CTX_encrypting(ctx)Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
53 if (plen == ((size_t)-1)
plen == ((size_t)-1)Description
TRUEnever evaluated
FALSEnever evaluated
)		0
54 plen = len;
never executed: plen = len;
0
55-
56-
57 if (rc4_off > md5_off
rc4_off > md5_offDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
58 md5_off += 64;
never executed: md5_off += 64;
0
59-
60 if (plen > md5_off
plen > md5_offDescription
TRUEnever evaluated
FALSEnever evaluated
 && (
(blocks = (ple...md5_off) / 64)Description
TRUEnever evaluated
FALSEnever evaluated
blocks = (plen - md5_off) / 64)
(blocks = (ple...md5_off) / 64)Description
TRUEnever evaluated
FALSEnever evaluated
 &&		0
61 (
(OPENSSL_ia32c...1 << 20)) == 0Description
TRUEnever evaluated
FALSEnever evaluated
OPENSSL_ia32cap_P[0] & (1 << 20)) == 0
(OPENSSL_ia32c...1 << 20)) == 0Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
62 MD5_Update(&key->md, in, md5_off);-
63 RC4(&key->ks, rc4_off, in, out);-
64-
65 rc4_md5_enc(&key->ks, in + rc4_off, out + rc4_off,-
66 &key->md, in + md5_off, blocks);-
67 blocks *= 64;-
68 rc4_off += blocks;-
69 md5_off += blocks;-
70 key->md.Nh += blocks >> 29;-
71 key->md.Nl += blocks <<= 3;-
72 if (key->md.Nl < (unsigned int)blocks
key->md.Nl < (...ned int)blocksDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
73 key->md.Nh++;
never executed: key->md.Nh++;
0
74 }
never executed: end of block
 else {		0
75 rc4_off = 0;-
76 md5_off = 0;-
77 }
never executed: end of block
0
78-
79 MD5_Update(&key->md, in + md5_off, plen - md5_off);-
80-
81 if (plen != len
plen != lenDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
82 if (in != out
in != outDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
83 memcpy(out + rc4_off, in + rc4_off, plen - rc4_off);
never executed: memcpy(out + rc4_off, in + rc4_off, plen - rc4_off);
0
84-
85-
86 MD5_Final(out + plen, &key->md);-
87 key->md = key->tail;-
88 MD5_Update(&key->md, out + plen, 16);-
89 MD5_Final(out + plen, &key->md);-
90-
91 RC4(&key->ks, len - rc4_off, out + rc4_off, out + rc4_off);-
92 }
never executed: end of block
 else {		0
93 RC4(&key->ks, len - rc4_off, in + rc4_off, out + rc4_off);-
94 }
never executed: end of block
0
95 } else {-
96 unsigned char mac[16];-
97-
98-
99 if (md5_off > rc4_off
md5_off > rc4_offDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
100 rc4_off += 2 * 64;
never executed: rc4_off += 2 * 64;
0
101 else-
102 rc4_off += 64;
never executed: rc4_off += 64;
0
103-
104 if (len > rc4_off
len > rc4_offDescription
TRUEnever evaluated
FALSEnever evaluated
 && (
(blocks = (len...rc4_off) / 64)Description
TRUEnever evaluated
FALSEnever evaluated
blocks = (len - rc4_off) / 64)
(blocks = (len...rc4_off) / 64)Description
TRUEnever evaluated
FALSEnever evaluated
 &&		0
105 (
(OPENSSL_ia32c...1 << 20)) == 0Description
TRUEnever evaluated
FALSEnever evaluated
OPENSSL_ia32cap_P[0] & (1 << 20)) == 0
(OPENSSL_ia32c...1 << 20)) == 0Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
106 RC4(&key->ks, rc4_off, in, out);-
107 MD5_Update(&key->md, out, md5_off);-
108-
109 rc4_md5_enc(&key->ks, in + rc4_off, out + rc4_off,-
110 &key->md, out + md5_off, blocks);-
111 blocks *= 64;-
112 rc4_off += blocks;-
113 md5_off += blocks;-
114 l = (key->md.Nl + (blocks << 3)) & 0xffffffffU;-
115 if (l < key->md.Nl
l < key->md.NlDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
116 key->md.Nh++;
never executed: key->md.Nh++;
0
117 key->md.Nl = l;-
118 key->md.Nh += blocks >> 29;-
119 }
never executed: end of block
 else {		0
120 md5_off = 0;-
121 rc4_off = 0;-
122 }
never executed: end of block
0
123-
124-
125 RC4(&key->ks, len - rc4_off, in + rc4_off, out + rc4_off);-
126 if (plen != ((size_t)-1)
plen != ((size_t)-1)Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
127 MD5_Update(&key->md, out + md5_off, plen - md5_off);-
128-
129-
130 MD5_Final(mac, &key->md);-
131 key->md = key->tail;-
132 MD5_Update(&key->md, mac, 16);-
133 MD5_Final(mac, &key->md);-
134-
135 if (CRYPTO_memcmp(out + plen, mac, 16)
CRYPTO_memcmp(...plen, mac, 16)Description
TRUEnever evaluated
FALSEnever evaluated
)		0
136 return
never executed: return 0;
 0;
never executed: return 0;
0
137 }
never executed: end of block
 else {		0
138 MD5_Update(&key->md, out + md5_off, len - md5_off);-
139 }
never executed: end of block
0
140 }-
141-
142 key->payload_length = ((size_t)-1);-
143-
144 return
never executed: return 1;
 1;
never executed: return 1;
0
145}-
146-
147static int rc4_hmac_md5_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg,-
148 void *ptr)-
149{-
150 EVP_RC4_HMAC_MD5 *key = ((EVP_RC4_HMAC_MD5 *)EVP_CIPHER_CTX_get_cipher_data(ctx));-
151-
152 switch (type) {-
153 case
never executed: case 0x17:
 0x17:
never executed: case 0x17:
0
154 {-
155 unsigned int i;-
156 unsigned char hmac_key[64];-
157-
158 memset(hmac_key, 0, sizeof(hmac_key));-
159-
160 if (arg > (int)sizeof(hmac_key)
arg > (int)sizeof(hmac_key)Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
161 MD5_Init(&key->head);-
162 MD5_Update(&key->head, ptr, arg);-
163 MD5_Final(hmac_key, &key->head);-
164 }
never executed: end of block
 else {		0
165 memcpy(hmac_key, ptr, arg);-
166 }
never executed: end of block
0
167-
168 for (i = 0; i < sizeof(hmac_key)
i < sizeof(hmac_key)Description
TRUEnever evaluated
FALSEnever evaluated
; i++)		0
169 hmac_key[i] ^= 0x36;
never executed: hmac_key[i] ^= 0x36;
0
170 MD5_Init(&key->head);-
171 MD5_Update(&key->head, hmac_key, sizeof(hmac_key));-
172-
173 for (i = 0; i < sizeof(hmac_key)
i < sizeof(hmac_key)Description
TRUEnever evaluated
FALSEnever evaluated
; i++)		0
174 hmac_key[i] ^= 0x36 ^ 0x5c;
never executed: hmac_key[i] ^= 0x36 ^ 0x5c;
0
175 MD5_Init(&key->tail);-
176 MD5_Update(&key->tail, hmac_key, sizeof(hmac_key));-
177-
178 OPENSSL_cleanse(hmac_key, sizeof(hmac_key));-
179-
180 return
never executed: return 1;
 1;
never executed: return 1;
0
181 }-
182 case
never executed: case 0x16:
 0x16:
never executed: case 0x16:
0
183 {-
184 unsigned char *p = ptr;-
185 unsigned int len;-
186-
187 if (arg != 13
arg != 13Description
TRUEnever evaluated
FALSEnever evaluated
)		0
188 return
never executed: return -1;
 -1;
never executed: return -1;
0
189-
190 len = p[arg - 2] << 8 | p[arg - 1];-
191-
192 if (!EVP_CIPHER_CTX_encrypting(ctx)
!EVP_CIPHER_CT...ncrypting(ctx)Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
193 if (len < 16
len < 16Description
TRUEnever evaluated
FALSEnever evaluated
)		0
194 return
never executed: return -1;
 -1;
never executed: return -1;
0
195 len -= 16;-
196 p[arg - 2] = len >> 8;-
197 p[arg - 1] = len;-
198 }
never executed: end of block
0
199 key->payload_length = len;-
200 key->md = key->head;-
201 MD5_Update(&key->md, p, arg);-
202-
203 return
never executed: return 16;
 16;
never executed: return 16;
0
204 }-
205 default
never executed: default:
:
never executed: default:
0
206 return
never executed: return -1;
 -1;
never executed: return -1;
0
207 }-
208}-
209-
210static EVP_CIPHER r4_hmac_md5_cipher = {-
211-
212 915,-
213-
214-
215-
216 1, 16, 0,-
217 0x0 | 0x8 |-
218 0x200000,-
219 rc4_hmac_md5_init_key,-
220 rc4_hmac_md5_cipher,-
221 -
222 ((void *)0)-
223 ,-
224 sizeof(EVP_RC4_HMAC_MD5),-
225 -
226 ((void *)0)-
227 ,-
228 -
229 ((void *)0)-
230 ,-
231 rc4_hmac_md5_ctrl,-
232 -
233 ((void *)0)-
234-
235};-
236-
237const EVP_CIPHER *EVP_rc4_hmac_md5(void)-
238{-
239 return
executed 3920 times by 1 test: return &r4_hmac_md5_cipher;
Executed by:
  • libcrypto.so.1.1
 &r4_hmac_md5_cipher;
executed 3920 times by 1 test: return &r4_hmac_md5_cipher;
Executed by:
  • libcrypto.so.1.1
3920
240}-
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