27 |
char *c; |
char *c; |
28 |
|
|
29 |
tty_disable_echo(); |
tty_disable_echo(); |
30 |
|
|
31 |
if (fgets(passwd, pwlen, stdin)) |
if (fgets(passwd, pwlen, stdin)) |
32 |
if ((c = strchr(passwd, '\n'))) |
if ((c = strchr(passwd, '\n'))) |
33 |
*c = 0; |
*c = 0; |
43 |
* Encrypt and Base64 encode passwords. Append the MD5 checksum of the passwords |
* Encrypt and Base64 encode passwords. Append the MD5 checksum of the passwords |
44 |
* before encrypting them. |
* before encrypting them. |
45 |
*/ |
*/ |
46 |
int encrypt_passwords(FILE *fd, account_t *accts[]) |
int encrypt_passwords(FILE * fd, account_t * accts[]) |
47 |
{ |
{ |
48 |
int i; |
int i; |
49 |
char *c; |
char *c; |
50 |
unsigned char iv[EVP_MAX_IV_LENGTH]; |
unsigned char iv[EVP_MAX_IV_LENGTH]; |
51 |
unsigned char *key; |
unsigned char *key; |
57 |
EVP_CIPHER_CTX ctx; |
EVP_CIPHER_CTX ctx; |
58 |
EVP_MD_CTX mdctx; |
EVP_MD_CTX mdctx; |
59 |
EVP_ENCODE_CTX bctx; |
EVP_ENCODE_CTX bctx; |
60 |
|
|
61 |
key = (unsigned char *) smalloc(EVP_MAX_KEY_LENGTH); |
key = (unsigned char *)smalloc(EVP_MAX_KEY_LENGTH); |
62 |
|
|
63 |
srandom(time(NULL)); |
srandom(time(NULL)); |
64 |
|
|
65 |
|
/* Initialization vector. */ |
66 |
c = ultostr(1 + random() % 100000000, 10); |
c = ultostr(1 + random() % 100000000, 10); |
67 |
memset(iv, '0', EVP_MAX_IV_LENGTH); |
memset(iv, '0', EVP_MAX_IV_LENGTH); |
68 |
memcpy(iv + 8 - strlen(c), c, min(8, strlen(c))); |
memcpy(iv + 8 - strlen(c), c, min(8, strlen(c))); |
|
|
|
69 |
fprintf(fd, "%.8s\n", iv); |
fprintf(fd, "%.8s\n", iv); |
70 |
|
|
71 |
EVP_CIPHER_CTX_init(&ctx); |
EVP_CIPHER_CTX_init(&ctx); |
72 |
|
|
73 |
EVP_BytesToKey(EVP_bf_cbc(), EVP_md5(), NULL, passphr, strlen(passphr), 1, |
EVP_BytesToKey(EVP_bf_cbc(), EVP_md5(), NULL, passphr, strlen(passphr), 1, |
74 |
key, NULL); |
key, NULL); |
75 |
|
|
76 |
EVP_DigestInit(&mdctx, EVP_md5()); |
EVP_DigestInit(&mdctx, EVP_md5()); |
77 |
EVP_EncryptInit(&ctx, EVP_bf_cbc(), key, iv); |
EVP_EncryptInit(&ctx, EVP_bf_cbc(), key, iv); |
78 |
EVP_EncodeInit(&bctx); |
EVP_EncodeInit(&bctx); |
89 |
} |
} |
90 |
|
|
91 |
EVP_DigestFinal(&mdctx, mdv, &mdl); |
EVP_DigestFinal(&mdctx, mdv, &mdl); |
92 |
|
|
93 |
xstrncpy(buf, ".\n", ENCRYPTION_BUF - 1); |
xstrncpy(buf, ".\n", ENCRYPTION_BUF - 1); |
94 |
|
|
95 |
|
/* MD5 checksum of data. */ |
96 |
for (i = 0; i < mdl; i++) |
for (i = 0; i < mdl; i++) |
97 |
snprintf(2 + buf + i * 2, ENCRYPTION_BUF - i * 2, "%02x", mdv[i]); |
snprintf(2 + buf + i * 2, ENCRYPTION_BUF - i * 2, "%02x", mdv[i]); |
98 |
|
|
99 |
EVP_EncryptUpdate(&ctx, ebuf, &ebufl, buf, strlen(buf)); |
EVP_EncryptUpdate(&ctx, ebuf, &ebufl, buf, strlen(buf)); |
100 |
EVP_EncodeUpdate(&bctx, bbuf, &bbufl, ebuf, ebufl); |
EVP_EncodeUpdate(&bctx, bbuf, &bbufl, ebuf, ebufl); |
101 |
fwrite(bbuf, sizeof(char), bbufl, fd); |
fwrite(bbuf, sizeof(char), bbufl, fd); |
103 |
EVP_EncryptFinal(&ctx, ebuf, &ebufl); |
EVP_EncryptFinal(&ctx, ebuf, &ebufl); |
104 |
EVP_EncodeUpdate(&bctx, bbuf, &bbufl, ebuf, ebufl); |
EVP_EncodeUpdate(&bctx, bbuf, &bbufl, ebuf, ebufl); |
105 |
EVP_EncodeFinal(&bctx, bbuf, &bbufl); |
EVP_EncodeFinal(&bctx, bbuf, &bbufl); |
106 |
|
|
107 |
fwrite(bbuf, sizeof(char), bbufl, fd); |
fwrite(bbuf, sizeof(char), bbufl, fd); |
108 |
|
|
109 |
EVP_CIPHER_CTX_cleanup(&ctx); |
EVP_CIPHER_CTX_cleanup(&ctx); |
110 |
|
|
111 |
return 0; |
return 0; |
112 |
} |
} |
113 |
|
|
115 |
/* |
/* |
116 |
* Decode (Base64) passwords, decrypt them and verify the MD5 checksum. |
* Decode (Base64) passwords, decrypt them and verify the MD5 checksum. |
117 |
*/ |
*/ |
118 |
int decrypt_passwords(unsigned char **buf, FILE *fd) |
int decrypt_passwords(unsigned char **buf, FILE * fd) |
119 |
{ |
{ |
120 |
int i, j = 1; |
int i, j = 1; |
121 |
unsigned char iv[EVP_MAX_IV_LENGTH]; |
unsigned char iv[EVP_MAX_IV_LENGTH]; |
129 |
EVP_CIPHER_CTX *ctx; |
EVP_CIPHER_CTX *ctx; |
130 |
EVP_MD_CTX mdctx; |
EVP_MD_CTX mdctx; |
131 |
EVP_ENCODE_CTX bctx; |
EVP_ENCODE_CTX bctx; |
132 |
|
|
133 |
c = *buf = (unsigned char *) smalloc(DECRYPTION_BUF * sizeof(char)); |
c = *buf = (unsigned char *)smalloc(DECRYPTION_BUF * sizeof(char)); |
134 |
key = (unsigned char *) smalloc(EVP_MAX_KEY_LENGTH); |
key = (unsigned char *)smalloc(EVP_MAX_KEY_LENGTH); |
135 |
ctx = (EVP_CIPHER_CTX *) smalloc(sizeof(EVP_CIPHER_CTX)); |
ctx = (EVP_CIPHER_CTX *) smalloc(sizeof(EVP_CIPHER_CTX)); |
136 |
|
|
137 |
fgets(bbuf, LINE_MAX, fd); |
fgets(bbuf, LINE_MAX, fd); |
138 |
|
|
139 |
memcpy(iv, bbuf, EVP_MAX_IV_LENGTH); |
memcpy(iv, bbuf, EVP_MAX_IV_LENGTH); |
142 |
|
|
143 |
EVP_BytesToKey(EVP_bf_cbc(), EVP_md5(), NULL, passphr, strlen(passphr), |
EVP_BytesToKey(EVP_bf_cbc(), EVP_md5(), NULL, passphr, strlen(passphr), |
144 |
1, key, NULL); |
1, key, NULL); |
145 |
|
|
146 |
EVP_DecryptInit(ctx, EVP_bf_cbc(), key, iv); |
EVP_DecryptInit(ctx, EVP_bf_cbc(), key, iv); |
147 |
EVP_DecodeInit(&bctx); |
EVP_DecodeInit(&bctx); |
148 |
|
|
156 |
|
|
157 |
if (c - *buf > DECRYPTION_BUF * j - 64) { |
if (c - *buf > DECRYPTION_BUF * j - 64) { |
158 |
i = c - *buf; |
i = c - *buf; |
159 |
*buf = (char *) srealloc(*buf, DECRYPTION_BUF * ++j); |
*buf = (char *)srealloc(*buf, DECRYPTION_BUF * ++j); |
160 |
c = *buf + i; |
c = *buf + i; |
161 |
*c = 0; |
*c = 0; |
162 |
} |
} |
163 |
} |
} |
164 |
|
|
165 |
EVP_DecodeFinal(&bctx, ebuf, &ebufl); |
EVP_DecodeFinal(&bctx, ebuf, &ebufl); |
166 |
if (!EVP_DecryptFinal(ctx, c, &bufl)) |
if (!EVP_DecryptFinal(ctx, c, &bufl)) |
167 |
goto fail; |
goto fail; |
169 |
c += bufl; |
c += bufl; |
170 |
*c = 0; |
*c = 0; |
171 |
|
|
172 |
|
/* Calculate the MD5 checksum and check if it is correct. */ |
173 |
if (!(c = strstr(*buf, "\n.\n"))) |
if (!(c = strstr(*buf, "\n.\n"))) |
174 |
goto fail; |
goto fail; |
175 |
|
|
176 |
EVP_DigestInit(&mdctx, EVP_md5()); |
EVP_DigestInit(&mdctx, EVP_md5()); |
177 |
EVP_DigestUpdate(&mdctx, *buf, c - *buf + 1); |
EVP_DigestUpdate(&mdctx, *buf, c - *buf + 1); |
178 |
EVP_DigestFinal(&mdctx, mdv, &mdl); |
EVP_DigestFinal(&mdctx, mdv, &mdl); |
179 |
|
|
180 |
for (i = 0; i < mdl; i++) |
for (i = 0; i < mdl; i++) |
181 |
snprintf(mdc + i * 2, EVP_MAX_MD_SIZE * 2 + 1 - i * 2, "%02x", mdv[i]); |
snprintf(mdc + i * 2, EVP_MAX_MD_SIZE * 2 + 1 - i * 2, "%02x", mdv[i]); |
182 |
|
|
183 |
c += 3; |
c += 3; |
184 |
|
|
185 |
if (strncmp(c, mdc, 32)) |
if (strncmp(c, mdc, 32)) |
186 |
goto fail; |
goto fail; |
187 |
|
|
188 |
EVP_CIPHER_CTX_cleanup(ctx); |
EVP_CIPHER_CTX_cleanup(ctx); |
189 |
|
|
190 |
sfree(key); |
sfree(key); |
191 |
sfree(ctx); |
sfree(ctx); |
192 |
|
|
193 |
return 0; |
return 0; |
194 |
|
|
195 |
fail: |
fail: |
196 |
error("Wrong master passphrase.\n"); |
error("Wrong master passphrase.\n"); |
197 |
EVP_CIPHER_CTX_cleanup(ctx); |
EVP_CIPHER_CTX_cleanup(ctx); |
198 |
sfree(*buf); |
sfree(*buf); |
199 |
sfree(key); |
sfree(key); |
200 |
sfree(ctx); |
sfree(ctx); |
201 |
|
|
202 |
return ERROR_DECRYPT; |
return ERROR_DECRYPT; |
203 |
} |
} |
204 |
|
|
213 |
char *c; |
char *c; |
214 |
char *p[2]; |
char *p[2]; |
215 |
account_t *a, *accts[EDITOR_PASSWORDS_MAX]; |
account_t *a, *accts[EDITOR_PASSWORDS_MAX]; |
216 |
|
|
217 |
if (!(flags & FLAG_BLANK_PASSWORD)) { |
if (!(flags & FLAG_BLANK_PASSWORD)) { |
218 |
error("imapfilter: no candidate passwords for encryption found\n"); |
error("imapfilter: no candidate passwords for encryption found\n"); |
219 |
return; |
return; |
220 |
} |
} |
|
|
|
221 |
q = 0; |
q = 0; |
222 |
|
|
223 |
memset(accts, 0, EDITOR_PASSWORDS_MAX); |
memset(accts, 0, EDITOR_PASSWORDS_MAX); |
224 |
|
|
225 |
for (i = 0, a = accounts; i < EDITOR_PASSWORDS_MAX - 1 && a; a = a->next) { |
for (i = 0, a = accounts; i < EDITOR_PASSWORDS_MAX - 1 && a; a = a->next) { |
265 |
break; |
break; |
266 |
accts[n - 1]->password[0] = 0; |
accts[n - 1]->password[0] = 0; |
267 |
} else if (*c == 'p') { |
} else if (*c == 'p') { |
268 |
p[0] = (char *) smalloc(PASSPHRASE_LEN); |
p[0] = (char *)smalloc(PASSPHRASE_LEN); |
269 |
p[1] = (char *) smalloc(PASSPHRASE_LEN); |
p[1] = (char *)smalloc(PASSPHRASE_LEN); |
270 |
do { |
do { |
271 |
for (i = 0; i < 2; i++) { |
for (i = 0; i < 2; i++) { |
272 |
printf("Enter %snew master password: ", |
printf("Enter %snew master password: ", |
287 |
} |
} |
288 |
} while (!q); |
} while (!q); |
289 |
} |
} |
290 |
|
|
291 |
#endif |
#endif |