version 1.25, 2001/04/17 10:53:24 |
version 1.25.2.4, 2002/06/02 22:56:10 |
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* called by a name other than "ssh" or "Secure Shell". |
* called by a name other than "ssh" or "Secure Shell". |
* |
* |
* |
* |
* Copyright (c) 2000 Markus Friedl. All rights reserved. |
* Copyright (c) 2000, 2001 Markus Friedl. All rights reserved. |
* |
* |
* Redistribution and use in source and binary forms, with or without |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* modification, are permitted provided that the following conditions |
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DSA *dsa; |
DSA *dsa; |
k = xmalloc(sizeof(*k)); |
k = xmalloc(sizeof(*k)); |
k->type = type; |
k->type = type; |
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k->flags = 0; |
k->dsa = NULL; |
k->dsa = NULL; |
k->rsa = NULL; |
k->rsa = NULL; |
switch (k->type) { |
switch (k->type) { |
case KEY_RSA1: |
case KEY_RSA1: |
case KEY_RSA: |
case KEY_RSA: |
rsa = RSA_new(); |
if ((rsa = RSA_new()) == NULL) |
rsa->n = BN_new(); |
fatal("key_new: RSA_new failed"); |
rsa->e = BN_new(); |
if ((rsa->n = BN_new()) == NULL) |
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fatal("key_new: BN_new failed"); |
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if ((rsa->e = BN_new()) == NULL) |
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fatal("key_new: BN_new failed"); |
k->rsa = rsa; |
k->rsa = rsa; |
break; |
break; |
case KEY_DSA: |
case KEY_DSA: |
dsa = DSA_new(); |
if ((dsa = DSA_new()) == NULL) |
dsa->p = BN_new(); |
fatal("key_new: DSA_new failed"); |
dsa->q = BN_new(); |
if ((dsa->p = BN_new()) == NULL) |
dsa->g = BN_new(); |
fatal("key_new: BN_new failed"); |
dsa->pub_key = BN_new(); |
if ((dsa->q = BN_new()) == NULL) |
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fatal("key_new: BN_new failed"); |
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if ((dsa->g = BN_new()) == NULL) |
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fatal("key_new: BN_new failed"); |
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if ((dsa->pub_key = BN_new()) == NULL) |
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fatal("key_new: BN_new failed"); |
k->dsa = dsa; |
k->dsa = dsa; |
break; |
break; |
case KEY_UNSPEC: |
case KEY_UNSPEC: |
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switch (k->type) { |
switch (k->type) { |
case KEY_RSA1: |
case KEY_RSA1: |
case KEY_RSA: |
case KEY_RSA: |
k->rsa->d = BN_new(); |
if ((k->rsa->d = BN_new()) == NULL) |
k->rsa->iqmp = BN_new(); |
fatal("key_new_private: BN_new failed"); |
k->rsa->q = BN_new(); |
if ((k->rsa->iqmp = BN_new()) == NULL) |
k->rsa->p = BN_new(); |
fatal("key_new_private: BN_new failed"); |
k->rsa->dmq1 = BN_new(); |
if ((k->rsa->q = BN_new()) == NULL) |
k->rsa->dmp1 = BN_new(); |
fatal("key_new_private: BN_new failed"); |
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if ((k->rsa->p = BN_new()) == NULL) |
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fatal("key_new_private: BN_new failed"); |
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if ((k->rsa->dmq1 = BN_new()) == NULL) |
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fatal("key_new_private: BN_new failed"); |
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if ((k->rsa->dmp1 = BN_new()) == NULL) |
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fatal("key_new_private: BN_new failed"); |
break; |
break; |
case KEY_DSA: |
case KEY_DSA: |
k->dsa->priv_key = BN_new(); |
if ((k->dsa->priv_key = BN_new()) == NULL) |
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fatal("key_new_private: BN_new failed"); |
break; |
break; |
case KEY_UNSPEC: |
case KEY_UNSPEC: |
break; |
break; |
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return 0; |
return 0; |
} |
} |
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u_char* |
static u_char* |
key_fingerprint_raw(Key *k, enum fp_type dgst_type, size_t *dgst_raw_length) |
key_fingerprint_raw(Key *k, enum fp_type dgst_type, u_int *dgst_raw_length) |
{ |
{ |
EVP_MD *md = NULL; |
const EVP_MD *md = NULL; |
EVP_MD_CTX ctx; |
EVP_MD_CTX ctx; |
u_char *blob = NULL; |
u_char *blob = NULL; |
u_char *retval = NULL; |
u_char *retval = NULL; |
int len = 0; |
u_int len = 0; |
int nlen, elen; |
int nlen, elen; |
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*dgst_raw_length = 0; |
*dgst_raw_length = 0; |
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retval = xmalloc(EVP_MAX_MD_SIZE); |
retval = xmalloc(EVP_MAX_MD_SIZE); |
EVP_DigestInit(&ctx, md); |
EVP_DigestInit(&ctx, md); |
EVP_DigestUpdate(&ctx, blob, len); |
EVP_DigestUpdate(&ctx, blob, len); |
EVP_DigestFinal(&ctx, retval, NULL); |
EVP_DigestFinal(&ctx, retval, dgst_raw_length); |
*dgst_raw_length = md->md_size; |
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memset(blob, 0, len); |
memset(blob, 0, len); |
xfree(blob); |
xfree(blob); |
} else { |
} else { |
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return retval; |
return retval; |
} |
} |
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char* |
static char* |
key_fingerprint_hex(u_char* dgst_raw, size_t dgst_raw_len) |
key_fingerprint_hex(u_char* dgst_raw, u_int dgst_raw_len) |
{ |
{ |
char *retval; |
char *retval; |
int i; |
int i; |
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retval = xmalloc(dgst_raw_len * 3 + 1); |
retval = xmalloc(dgst_raw_len * 3 + 1); |
retval[0] = '\0'; |
retval[0] = '\0'; |
for(i = 0; i < dgst_raw_len; i++) { |
for (i = 0; i < dgst_raw_len; i++) { |
char hex[4]; |
char hex[4]; |
snprintf(hex, sizeof(hex), "%02x:", dgst_raw[i]); |
snprintf(hex, sizeof(hex), "%02x:", dgst_raw[i]); |
strlcat(retval, hex, dgst_raw_len * 3); |
strlcat(retval, hex, dgst_raw_len * 3); |
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return retval; |
return retval; |
} |
} |
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char* |
static char* |
key_fingerprint_bubblebabble(u_char* dgst_raw, size_t dgst_raw_len) |
key_fingerprint_bubblebabble(u_char* dgst_raw, u_int dgst_raw_len) |
{ |
{ |
char vowels[] = { 'a', 'e', 'i', 'o', 'u', 'y' }; |
char vowels[] = { 'a', 'e', 'i', 'o', 'u', 'y' }; |
char consonants[] = { 'b', 'c', 'd', 'f', 'g', 'h', 'k', 'l', 'm', |
char consonants[] = { 'b', 'c', 'd', 'f', 'g', 'h', 'k', 'l', 'm', |
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{ |
{ |
char *retval = NULL; |
char *retval = NULL; |
u_char *dgst_raw; |
u_char *dgst_raw; |
size_t dgst_raw_len; |
u_int dgst_raw_len; |
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dgst_raw = key_fingerprint_raw(k, dgst_type, &dgst_raw_len); |
dgst_raw = key_fingerprint_raw(k, dgst_type, &dgst_raw_len); |
if (!dgst_raw) |
if (!dgst_raw) |
fatal("key_fingerprint: null from key_fingerprint_raw()"); |
fatal("key_fingerprint: null from key_fingerprint_raw()"); |
switch(dgst_rep) { |
switch (dgst_rep) { |
case SSH_FP_HEX: |
case SSH_FP_HEX: |
retval = key_fingerprint_hex(dgst_raw, dgst_raw_len); |
retval = key_fingerprint_hex(dgst_raw, dgst_raw_len); |
break; |
break; |
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* last processed (and maybe modified) character. Note that this may modify |
* last processed (and maybe modified) character. Note that this may modify |
* the buffer containing the number. |
* the buffer containing the number. |
*/ |
*/ |
int |
static int |
read_bignum(char **cpp, BIGNUM * value) |
read_bignum(char **cpp, BIGNUM * value) |
{ |
{ |
char *cp = *cpp; |
char *cp = *cpp; |
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*cpp = cp; |
*cpp = cp; |
return 1; |
return 1; |
} |
} |
int |
static int |
write_bignum(FILE *f, BIGNUM *num) |
write_bignum(FILE *f, BIGNUM *num) |
{ |
{ |
char *buf = BN_bn2dec(num); |
char *buf = BN_bn2dec(num); |
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return 0; |
return 0; |
} |
} |
fprintf(f, " %s", buf); |
fprintf(f, " %s", buf); |
xfree(buf); |
OPENSSL_free(buf); |
return 1; |
return 1; |
} |
} |
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/* returns 1 ok, -1 error, 0 type mismatch */ |
/* returns 1 ok, -1 error */ |
int |
int |
key_read(Key *ret, char **cpp) |
key_read(Key *ret, char **cpp) |
{ |
{ |
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cp = *cpp; |
cp = *cpp; |
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switch(ret->type) { |
switch (ret->type) { |
case KEY_RSA1: |
case KEY_RSA1: |
/* Get number of bits. */ |
/* Get number of bits. */ |
if (*cp < '0' || *cp > '9') |
if (*cp < '0' || *cp > '9') |
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} else if (ret->type != type) { |
} else if (ret->type != type) { |
/* is a key, but different type */ |
/* is a key, but different type */ |
debug3("key_read: type mismatch"); |
debug3("key_read: type mismatch"); |
return 0; |
return -1; |
} |
} |
len = 2*strlen(cp); |
len = 2*strlen(cp); |
blob = xmalloc(len); |
blob = xmalloc(len); |
n = uudecode(cp, blob, len); |
n = uudecode(cp, blob, len); |
if (n < 0) { |
if (n < 0) { |
error("key_read: uudecode %s failed", cp); |
error("key_read: uudecode %s failed", cp); |
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xfree(blob); |
return -1; |
return -1; |
} |
} |
k = key_from_blob(blob, n); |
k = key_from_blob(blob, n); |
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xfree(blob); |
if (k == NULL) { |
if (k == NULL) { |
error("key_read: key_from_blob %s failed", cp); |
error("key_read: key_from_blob %s failed", cp); |
return -1; |
return -1; |
} |
} |
xfree(blob); |
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if (k->type != type) { |
if (k->type != type) { |
error("key_read: type mismatch: encoding error"); |
error("key_read: type mismatch: encoding error"); |
key_free(k); |
key_free(k); |
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#endif |
#endif |
} |
} |
/*XXXX*/ |
/*XXXX*/ |
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key_free(k); |
if (success != 1) |
if (success != 1) |
break; |
break; |
key_free(k); |
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/* advance cp: skip whitespace and data */ |
/* advance cp: skip whitespace and data */ |
while (*cp == ' ' || *cp == '\t') |
while (*cp == ' ' || *cp == '\t') |
cp++; |
cp++; |
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int |
int |
key_write(Key *key, FILE *f) |
key_write(Key *key, FILE *f) |
{ |
{ |
int success = 0; |
int n, success = 0; |
u_int bits = 0; |
u_int len, bits = 0; |
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u_char *blob, *uu; |
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if (key->type == KEY_RSA1 && key->rsa != NULL) { |
if (key->type == KEY_RSA1 && key->rsa != NULL) { |
/* size of modulus 'n' */ |
/* size of modulus 'n' */ |
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} |
} |
} else if ((key->type == KEY_DSA && key->dsa != NULL) || |
} else if ((key->type == KEY_DSA && key->dsa != NULL) || |
(key->type == KEY_RSA && key->rsa != NULL)) { |
(key->type == KEY_RSA && key->rsa != NULL)) { |
int len, n; |
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u_char *blob, *uu; |
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key_to_blob(key, &blob, &len); |
key_to_blob(key, &blob, &len); |
uu = xmalloc(2*len); |
uu = xmalloc(2*len); |
n = uuencode(blob, len, uu, 2*len); |
n = uuencode(blob, len, uu, 2*len); |
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return "ssh-unknown"; |
return "ssh-unknown"; |
} |
} |
u_int |
u_int |
key_size(Key *k){ |
key_size(Key *k) |
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{ |
switch (k->type) { |
switch (k->type) { |
case KEY_RSA1: |
case KEY_RSA1: |
case KEY_RSA: |
case KEY_RSA: |
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return 0; |
return 0; |
} |
} |
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RSA * |
static RSA * |
rsa_generate_private_key(u_int bits) |
rsa_generate_private_key(u_int bits) |
{ |
{ |
RSA *private; |
RSA *private; |
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return private; |
return private; |
} |
} |
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DSA* |
static DSA* |
dsa_generate_private_key(u_int bits) |
dsa_generate_private_key(u_int bits) |
{ |
{ |
DSA *private = DSA_generate_parameters(bits, NULL, 0, NULL, NULL, NULL, NULL); |
DSA *private = DSA_generate_parameters(bits, NULL, 0, NULL, NULL, NULL, NULL); |
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int |
int |
key_type_from_name(char *name) |
key_type_from_name(char *name) |
{ |
{ |
if (strcmp(name, "rsa1") == 0){ |
if (strcmp(name, "rsa1") == 0) { |
return KEY_RSA1; |
return KEY_RSA1; |
} else if (strcmp(name, "rsa") == 0){ |
} else if (strcmp(name, "rsa") == 0) { |
return KEY_RSA; |
return KEY_RSA; |
} else if (strcmp(name, "dsa") == 0){ |
} else if (strcmp(name, "dsa") == 0) { |
return KEY_DSA; |
return KEY_DSA; |
} else if (strcmp(name, "ssh-rsa") == 0){ |
} else if (strcmp(name, "ssh-rsa") == 0) { |
return KEY_RSA; |
return KEY_RSA; |
} else if (strcmp(name, "ssh-dss") == 0){ |
} else if (strcmp(name, "ssh-dss") == 0) { |
return KEY_DSA; |
return KEY_DSA; |
} |
} |
debug2("key_type_from_name: unknown key type '%s'", name); |
debug2("key_type_from_name: unknown key type '%s'", name); |
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return 0; |
return 0; |
s = cp = xstrdup(names); |
s = cp = xstrdup(names); |
for ((p = strsep(&cp, ",")); p && *p != '\0'; |
for ((p = strsep(&cp, ",")); p && *p != '\0'; |
(p = strsep(&cp, ","))) { |
(p = strsep(&cp, ","))) { |
switch (key_type_from_name(p)) { |
switch (key_type_from_name(p)) { |
case KEY_RSA1: |
case KEY_RSA1: |
case KEY_UNSPEC: |
case KEY_UNSPEC: |
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} |
} |
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Key * |
Key * |
key_from_blob(char *blob, int blen) |
key_from_blob(u_char *blob, int blen) |
{ |
{ |
Buffer b; |
Buffer b; |
char *ktype; |
char *ktype; |
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ktype = buffer_get_string(&b, NULL); |
ktype = buffer_get_string(&b, NULL); |
type = key_type_from_name(ktype); |
type = key_type_from_name(ktype); |
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switch(type){ |
switch (type) { |
case KEY_RSA: |
case KEY_RSA: |
key = key_new(type); |
key = key_new(type); |
buffer_get_bignum2(&b, key->rsa->e); |
buffer_get_bignum2(&b, key->rsa->e); |
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return 0; |
return 0; |
} |
} |
buffer_init(&b); |
buffer_init(&b); |
switch(key->type){ |
switch (key->type) { |
case KEY_DSA: |
case KEY_DSA: |
buffer_put_cstring(&b, key_ssh_name(key)); |
buffer_put_cstring(&b, key_ssh_name(key)); |
buffer_put_bignum2(&b, key->dsa->p); |
buffer_put_bignum2(&b, key->dsa->p); |
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buffer_put_bignum2(&b, key->rsa->n); |
buffer_put_bignum2(&b, key->rsa->n); |
break; |
break; |
default: |
default: |
error("key_to_blob: illegal key type %d", key->type); |
error("key_to_blob: unsupported key type %d", key->type); |
break; |
buffer_free(&b); |
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return 0; |
} |
} |
len = buffer_len(&b); |
len = buffer_len(&b); |
buf = xmalloc(len); |
buf = xmalloc(len); |
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int |
int |
key_sign( |
key_sign( |
Key *key, |
Key *key, |
u_char **sigp, int *lenp, |
u_char **sigp, u_int *lenp, |
u_char *data, int datalen) |
u_char *data, u_int datalen) |
{ |
{ |
switch(key->type){ |
switch (key->type) { |
case KEY_DSA: |
case KEY_DSA: |
return ssh_dss_sign(key, sigp, lenp, data, datalen); |
return ssh_dss_sign(key, sigp, lenp, data, datalen); |
break; |
break; |
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int |
int |
key_verify( |
key_verify( |
Key *key, |
Key *key, |
u_char *signature, int signaturelen, |
u_char *signature, u_int signaturelen, |
u_char *data, int datalen) |
u_char *data, u_int datalen) |
{ |
{ |
switch(key->type){ |
if (signaturelen == 0) |
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return -1; |
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switch (key->type) { |
case KEY_DSA: |
case KEY_DSA: |
return ssh_dss_verify(key, signature, signaturelen, data, datalen); |
return ssh_dss_verify(key, signature, signaturelen, data, datalen); |
break; |
break; |
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return -1; |
return -1; |
break; |
break; |
} |
} |
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} |
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/* Converts a private to a public key */ |
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Key * |
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key_demote(Key *k) |
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{ |
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Key *pk; |
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pk = xmalloc(sizeof(*pk)); |
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pk->type = k->type; |
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pk->flags = k->flags; |
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pk->dsa = NULL; |
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pk->rsa = NULL; |
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switch (k->type) { |
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case KEY_RSA1: |
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case KEY_RSA: |
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if ((pk->rsa = RSA_new()) == NULL) |
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fatal("key_demote: RSA_new failed"); |
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if ((pk->rsa->e = BN_dup(k->rsa->e)) == NULL) |
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fatal("key_demote: BN_dup failed"); |
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if ((pk->rsa->n = BN_dup(k->rsa->n)) == NULL) |
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fatal("key_demote: BN_dup failed"); |
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break; |
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case KEY_DSA: |
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if ((pk->dsa = DSA_new()) == NULL) |
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fatal("key_demote: DSA_new failed"); |
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if ((pk->dsa->p = BN_dup(k->dsa->p)) == NULL) |
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fatal("key_demote: BN_dup failed"); |
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if ((pk->dsa->q = BN_dup(k->dsa->q)) == NULL) |
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fatal("key_demote: BN_dup failed"); |
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if ((pk->dsa->g = BN_dup(k->dsa->g)) == NULL) |
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fatal("key_demote: BN_dup failed"); |
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if ((pk->dsa->pub_key = BN_dup(k->dsa->pub_key)) == NULL) |
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fatal("key_demote: BN_dup failed"); |
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break; |
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default: |
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fatal("key_free: bad key type %d", k->type); |
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break; |
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} |
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return (pk); |
} |
} |