=================================================================== RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/ssh/Attic/key.c,v retrieving revision 1.33 retrieving revision 1.33.2.5 diff -u -r1.33 -r1.33.2.5 --- src/usr.bin/ssh/Attic/key.c 2001/10/04 14:34:16 1.33 +++ src/usr.bin/ssh/Attic/key.c 2002/10/11 14:53:06 1.33.2.5 @@ -32,7 +32,7 @@ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include "includes.h" -RCSID("$OpenBSD: key.c,v 1.33 2001/10/04 14:34:16 markus Exp $"); +RCSID("$OpenBSD: key.c,v 1.33.2.5 2002/10/11 14:53:06 miod Exp $"); #include @@ -60,17 +60,25 @@ switch (k->type) { case KEY_RSA1: case KEY_RSA: - rsa = RSA_new(); - rsa->n = BN_new(); - rsa->e = BN_new(); + if ((rsa = RSA_new()) == NULL) + fatal("key_new: RSA_new failed"); + if ((rsa->n = BN_new()) == NULL) + fatal("key_new: BN_new failed"); + if ((rsa->e = BN_new()) == NULL) + fatal("key_new: BN_new failed"); k->rsa = rsa; break; case KEY_DSA: - dsa = DSA_new(); - dsa->p = BN_new(); - dsa->q = BN_new(); - dsa->g = BN_new(); - dsa->pub_key = BN_new(); + if ((dsa = DSA_new()) == NULL) + fatal("key_new: DSA_new failed"); + if ((dsa->p = BN_new()) == NULL) + fatal("key_new: BN_new failed"); + if ((dsa->q = BN_new()) == NULL) + fatal("key_new: BN_new failed"); + if ((dsa->g = BN_new()) == NULL) + fatal("key_new: BN_new failed"); + if ((dsa->pub_key = BN_new()) == NULL) + fatal("key_new: BN_new failed"); k->dsa = dsa; break; case KEY_UNSPEC: @@ -81,6 +89,7 @@ } return k; } + Key * key_new_private(int type) { @@ -88,15 +97,22 @@ switch (k->type) { case KEY_RSA1: case KEY_RSA: - k->rsa->d = BN_new(); - k->rsa->iqmp = BN_new(); - k->rsa->q = BN_new(); - k->rsa->p = BN_new(); - k->rsa->dmq1 = BN_new(); - k->rsa->dmp1 = BN_new(); + if ((k->rsa->d = BN_new()) == NULL) + fatal("key_new_private: BN_new failed"); + if ((k->rsa->iqmp = BN_new()) == NULL) + fatal("key_new_private: BN_new failed"); + if ((k->rsa->q = BN_new()) == NULL) + fatal("key_new_private: BN_new failed"); + if ((k->rsa->p = BN_new()) == NULL) + fatal("key_new_private: BN_new failed"); + if ((k->rsa->dmq1 = BN_new()) == NULL) + fatal("key_new_private: BN_new failed"); + if ((k->rsa->dmp1 = BN_new()) == NULL) + fatal("key_new_private: BN_new failed"); break; case KEY_DSA: - k->dsa->priv_key = BN_new(); + if ((k->dsa->priv_key = BN_new()) == NULL) + fatal("key_new_private: BN_new failed"); break; case KEY_UNSPEC: break; @@ -105,6 +121,7 @@ } return k; } + void key_free(Key *k) { @@ -154,14 +171,14 @@ return 0; } -static u_char* -key_fingerprint_raw(Key *k, enum fp_type dgst_type, size_t *dgst_raw_length) +static u_char * +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; u_char *blob = NULL; u_char *retval = NULL; - int len = 0; + u_int len = 0; int nlen, elen; *dgst_raw_length = 0; @@ -201,8 +218,7 @@ retval = xmalloc(EVP_MAX_MD_SIZE); EVP_DigestInit(&ctx, md); EVP_DigestUpdate(&ctx, blob, len); - EVP_DigestFinal(&ctx, retval, NULL); - *dgst_raw_length = md->md_size; + EVP_DigestFinal(&ctx, retval, dgst_raw_length); memset(blob, 0, len); xfree(blob); } else { @@ -211,15 +227,15 @@ return retval; } -static char* -key_fingerprint_hex(u_char* dgst_raw, size_t dgst_raw_len) +static char * +key_fingerprint_hex(u_char *dgst_raw, u_int dgst_raw_len) { char *retval; int i; retval = xmalloc(dgst_raw_len * 3 + 1); retval[0] = '\0'; - for(i = 0; i < dgst_raw_len; i++) { + for (i = 0; i < dgst_raw_len; i++) { char hex[4]; snprintf(hex, sizeof(hex), "%02x:", dgst_raw[i]); strlcat(retval, hex, dgst_raw_len * 3); @@ -228,8 +244,8 @@ return retval; } -static char* -key_fingerprint_bubblebabble(u_char* dgst_raw, size_t dgst_raw_len) +static char * +key_fingerprint_bubblebabble(u_char *dgst_raw, u_int dgst_raw_len) { char vowels[] = { 'a', 'e', 'i', 'o', 'u', 'y' }; char consonants[] = { 'b', 'c', 'd', 'f', 'g', 'h', 'k', 'l', 'm', @@ -275,17 +291,17 @@ return retval; } -char* +char * key_fingerprint(Key *k, enum fp_type dgst_type, enum fp_rep dgst_rep) { char *retval = NULL; u_char *dgst_raw; - size_t dgst_raw_len; - + u_int dgst_raw_len; + dgst_raw = key_fingerprint_raw(k, dgst_type, &dgst_raw_len); if (!dgst_raw) fatal("key_fingerprint: null from key_fingerprint_raw()"); - switch(dgst_rep) { + switch (dgst_rep) { case SSH_FP_HEX: retval = key_fingerprint_hex(dgst_raw, dgst_raw_len); break; @@ -345,6 +361,7 @@ *cpp = cp; return 1; } + static int write_bignum(FILE *f, BIGNUM *num) { @@ -371,7 +388,7 @@ cp = *cpp; - switch(ret->type) { + switch (ret->type) { case KEY_RSA1: /* Get number of bits. */ if (*cp < '0' || *cp > '9') @@ -420,14 +437,15 @@ n = uudecode(cp, blob, len); if (n < 0) { error("key_read: uudecode %s failed", cp); + xfree(blob); return -1; } k = key_from_blob(blob, n); + xfree(blob); if (k == NULL) { error("key_read: key_from_blob %s failed", cp); return -1; } - xfree(blob); if (k->type != type) { error("key_read: type mismatch: encoding error"); key_free(k); @@ -454,9 +472,9 @@ #endif } /*XXXX*/ + key_free(k); if (success != 1) break; - key_free(k); /* advance cp: skip whitespace and data */ while (*cp == ' ' || *cp == '\t') cp++; @@ -470,11 +488,14 @@ } return success; } + int key_write(Key *key, FILE *f) { - int success = 0; - u_int bits = 0; + int n, success = 0; + u_int len, bits = 0; + u_char *blob; + char *uu; if (key->type == KEY_RSA1 && key->rsa != NULL) { /* size of modulus 'n' */ @@ -488,8 +509,6 @@ } } else if ((key->type == KEY_DSA && key->dsa != NULL) || (key->type == KEY_RSA && key->rsa != NULL)) { - int len, n; - u_char *blob, *uu; key_to_blob(key, &blob, &len); uu = xmalloc(2*len); n = uuencode(blob, len, uu, 2*len); @@ -502,6 +521,7 @@ } return success; } + char * key_type(Key *k) { @@ -518,6 +538,7 @@ } return "unknown"; } + char * key_ssh_name(Key *k) { @@ -531,8 +552,10 @@ } return "ssh-unknown"; } + u_int -key_size(Key *k){ +key_size(Key *k) +{ switch (k->type) { case KEY_RSA1: case KEY_RSA: @@ -615,15 +638,15 @@ int key_type_from_name(char *name) { - if (strcmp(name, "rsa1") == 0){ + if (strcmp(name, "rsa1") == 0) { return KEY_RSA1; - } else if (strcmp(name, "rsa") == 0){ + } else if (strcmp(name, "rsa") == 0) { return KEY_RSA; - } else if (strcmp(name, "dsa") == 0){ + } else if (strcmp(name, "dsa") == 0) { return KEY_DSA; - } else if (strcmp(name, "ssh-rsa") == 0){ + } else if (strcmp(name, "ssh-rsa") == 0) { return KEY_RSA; - } else if (strcmp(name, "ssh-dss") == 0){ + } else if (strcmp(name, "ssh-dss") == 0) { return KEY_DSA; } debug2("key_type_from_name: unknown key type '%s'", name); @@ -639,7 +662,7 @@ return 0; s = cp = xstrdup(names); for ((p = strsep(&cp, ",")); p && *p != '\0'; - (p = strsep(&cp, ","))) { + (p = strsep(&cp, ","))) { switch (key_type_from_name(p)) { case KEY_RSA1: case KEY_UNSPEC: @@ -668,7 +691,7 @@ ktype = buffer_get_string(&b, NULL); type = key_type_from_name(ktype); - switch(type){ + switch (type) { case KEY_RSA: key = key_new(type); buffer_get_bignum2(&b, key->rsa->e); @@ -707,14 +730,13 @@ { Buffer b; int len; - u_char *buf; if (key == NULL) { error("key_to_blob: key == NULL"); return 0; } buffer_init(&b); - switch(key->type){ + switch (key->type) { case KEY_DSA: buffer_put_cstring(&b, key_ssh_name(key)); buffer_put_bignum2(&b, key->dsa->p); @@ -733,24 +755,24 @@ return 0; } len = buffer_len(&b); - buf = xmalloc(len); - memcpy(buf, buffer_ptr(&b), len); - memset(buffer_ptr(&b), 0, len); - buffer_free(&b); if (lenp != NULL) *lenp = len; - if (blobp != NULL) - *blobp = buf; + if (blobp != NULL) { + *blobp = xmalloc(len); + memcpy(*blobp, buffer_ptr(&b), len); + } + memset(buffer_ptr(&b), 0, len); + buffer_free(&b); return len; } int key_sign( Key *key, - u_char **sigp, int *lenp, - u_char *data, int datalen) + u_char **sigp, u_int *lenp, + u_char *data, u_int datalen) { - switch(key->type){ + switch (key->type) { case KEY_DSA: return ssh_dss_sign(key, sigp, lenp, data, datalen); break; @@ -764,16 +786,20 @@ } } +/* + * key_verify returns 1 for a correct signature, 0 for an incorrect signature + * and -1 on error. + */ int key_verify( Key *key, - u_char *signature, int signaturelen, - u_char *data, int datalen) + u_char *signature, u_int signaturelen, + u_char *data, u_int datalen) { if (signaturelen == 0) return -1; - switch(key->type){ + switch (key->type) { case KEY_DSA: return ssh_dss_verify(key, signature, signaturelen, data, datalen); break; @@ -785,4 +811,46 @@ return -1; break; } +} + +/* Converts a private to a public key */ +Key * +key_demote(Key *k) +{ + Key *pk; + + pk = xmalloc(sizeof(*pk)); + pk->type = k->type; + pk->flags = k->flags; + pk->dsa = NULL; + pk->rsa = NULL; + + switch (k->type) { + case KEY_RSA1: + case KEY_RSA: + if ((pk->rsa = RSA_new()) == NULL) + fatal("key_demote: RSA_new failed"); + if ((pk->rsa->e = BN_dup(k->rsa->e)) == NULL) + fatal("key_demote: BN_dup failed"); + if ((pk->rsa->n = BN_dup(k->rsa->n)) == NULL) + fatal("key_demote: BN_dup failed"); + break; + case KEY_DSA: + if ((pk->dsa = DSA_new()) == NULL) + fatal("key_demote: DSA_new failed"); + if ((pk->dsa->p = BN_dup(k->dsa->p)) == NULL) + fatal("key_demote: BN_dup failed"); + if ((pk->dsa->q = BN_dup(k->dsa->q)) == NULL) + fatal("key_demote: BN_dup failed"); + if ((pk->dsa->g = BN_dup(k->dsa->g)) == NULL) + fatal("key_demote: BN_dup failed"); + if ((pk->dsa->pub_key = BN_dup(k->dsa->pub_key)) == NULL) + fatal("key_demote: BN_dup failed"); + break; + default: + fatal("key_free: bad key type %d", k->type); + break; + } + + return (pk); }