diff options
author | des <des@FreeBSD.org> | 2008-07-22 19:01:18 +0000 |
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committer | des <des@FreeBSD.org> | 2008-07-22 19:01:18 +0000 |
commit | f1596419c2717cb81dd4b676d5e0cf1a3e30e98c (patch) | |
tree | 9827eb822991aa369cf5d220fce40c3d2011c19f /crypto/openssh/key.c | |
parent | 666aa9cc1660793c97ef29a6cb66dfbb894dde8f (diff) | |
download | FreeBSD-src-f1596419c2717cb81dd4b676d5e0cf1a3e30e98c.zip FreeBSD-src-f1596419c2717cb81dd4b676d5e0cf1a3e30e98c.tar.gz |
Properly flatten openssh/dist.
Diffstat (limited to 'crypto/openssh/key.c')
-rw-r--r-- | crypto/openssh/key.c | 868 |
1 files changed, 0 insertions, 868 deletions
diff --git a/crypto/openssh/key.c b/crypto/openssh/key.c deleted file mode 100644 index 93b2d41..0000000 --- a/crypto/openssh/key.c +++ /dev/null @@ -1,868 +0,0 @@ -/* $OpenBSD: key.c,v 1.68 2006/11/06 21:25:28 markus Exp $ */ -/* - * read_bignum(): - * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland - * - * As far as I am concerned, the code I have written for this software - * can be used freely for any purpose. Any derived versions of this - * software must be clearly marked as such, and if the derived work is - * incompatible with the protocol description in the RFC file, it must be - * called by a name other than "ssh" or "Secure Shell". - * - * - * Copyright (c) 2000, 2001 Markus Friedl. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. - * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#include "includes.h" - -#include <sys/types.h> - -#include <openssl/evp.h> - -#include <stdarg.h> -#include <stdio.h> -#include <string.h> - -#include "xmalloc.h" -#include "key.h" -#include "rsa.h" -#include "uuencode.h" -#include "buffer.h" -#include "log.h" - -Key * -key_new(int type) -{ - Key *k; - RSA *rsa; - DSA *dsa; - k = xcalloc(1, sizeof(*k)); - k->type = type; - k->dsa = NULL; - k->rsa = NULL; - switch (k->type) { - case KEY_RSA1: - case KEY_RSA: - 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: - 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: - break; - default: - fatal("key_new: bad key type %d", k->type); - break; - } - return k; -} - -Key * -key_new_private(int type) -{ - Key *k = key_new(type); - switch (k->type) { - case KEY_RSA1: - case KEY_RSA: - 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: - if ((k->dsa->priv_key = BN_new()) == NULL) - fatal("key_new_private: BN_new failed"); - break; - case KEY_UNSPEC: - break; - default: - break; - } - return k; -} - -void -key_free(Key *k) -{ - if (k == NULL) - fatal("key_free: key is NULL"); - switch (k->type) { - case KEY_RSA1: - case KEY_RSA: - if (k->rsa != NULL) - RSA_free(k->rsa); - k->rsa = NULL; - break; - case KEY_DSA: - if (k->dsa != NULL) - DSA_free(k->dsa); - k->dsa = NULL; - break; - case KEY_UNSPEC: - break; - default: - fatal("key_free: bad key type %d", k->type); - break; - } - xfree(k); -} - -int -key_equal(const Key *a, const Key *b) -{ - if (a == NULL || b == NULL || a->type != b->type) - return 0; - switch (a->type) { - case KEY_RSA1: - case KEY_RSA: - return a->rsa != NULL && b->rsa != NULL && - BN_cmp(a->rsa->e, b->rsa->e) == 0 && - BN_cmp(a->rsa->n, b->rsa->n) == 0; - case KEY_DSA: - return a->dsa != NULL && b->dsa != NULL && - BN_cmp(a->dsa->p, b->dsa->p) == 0 && - BN_cmp(a->dsa->q, b->dsa->q) == 0 && - BN_cmp(a->dsa->g, b->dsa->g) == 0 && - BN_cmp(a->dsa->pub_key, b->dsa->pub_key) == 0; - default: - fatal("key_equal: bad key type %d", a->type); - break; - } - return 0; -} - -u_char* -key_fingerprint_raw(const Key *k, enum fp_type dgst_type, - u_int *dgst_raw_length) -{ - const EVP_MD *md = NULL; - EVP_MD_CTX ctx; - u_char *blob = NULL; - u_char *retval = NULL; - u_int len = 0; - int nlen, elen; - - *dgst_raw_length = 0; - - switch (dgst_type) { - case SSH_FP_MD5: - md = EVP_md5(); - break; - case SSH_FP_SHA1: - md = EVP_sha1(); - break; - default: - fatal("key_fingerprint_raw: bad digest type %d", - dgst_type); - } - switch (k->type) { - case KEY_RSA1: - nlen = BN_num_bytes(k->rsa->n); - elen = BN_num_bytes(k->rsa->e); - len = nlen + elen; - blob = xmalloc(len); - BN_bn2bin(k->rsa->n, blob); - BN_bn2bin(k->rsa->e, blob + nlen); - break; - case KEY_DSA: - case KEY_RSA: - key_to_blob(k, &blob, &len); - break; - case KEY_UNSPEC: - return retval; - default: - fatal("key_fingerprint_raw: bad key type %d", k->type); - break; - } - if (blob != NULL) { - retval = xmalloc(EVP_MAX_MD_SIZE); - EVP_DigestInit(&ctx, md); - EVP_DigestUpdate(&ctx, blob, len); - EVP_DigestFinal(&ctx, retval, dgst_raw_length); - memset(blob, 0, len); - xfree(blob); - } else { - fatal("key_fingerprint_raw: blob is null"); - } - return retval; -} - -static char * -key_fingerprint_hex(u_char *dgst_raw, u_int dgst_raw_len) -{ - char *retval; - u_int i; - - retval = xcalloc(1, dgst_raw_len * 3 + 1); - 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 + 1); - } - - /* Remove the trailing ':' character */ - retval[(dgst_raw_len * 3) - 1] = '\0'; - return retval; -} - -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', - 'n', 'p', 'r', 's', 't', 'v', 'z', 'x' }; - u_int i, j = 0, rounds, seed = 1; - char *retval; - - rounds = (dgst_raw_len / 2) + 1; - retval = xcalloc((rounds * 6), sizeof(char)); - retval[j++] = 'x'; - for (i = 0; i < rounds; i++) { - u_int idx0, idx1, idx2, idx3, idx4; - if ((i + 1 < rounds) || (dgst_raw_len % 2 != 0)) { - idx0 = (((((u_int)(dgst_raw[2 * i])) >> 6) & 3) + - seed) % 6; - idx1 = (((u_int)(dgst_raw[2 * i])) >> 2) & 15; - idx2 = ((((u_int)(dgst_raw[2 * i])) & 3) + - (seed / 6)) % 6; - retval[j++] = vowels[idx0]; - retval[j++] = consonants[idx1]; - retval[j++] = vowels[idx2]; - if ((i + 1) < rounds) { - idx3 = (((u_int)(dgst_raw[(2 * i) + 1])) >> 4) & 15; - idx4 = (((u_int)(dgst_raw[(2 * i) + 1]))) & 15; - retval[j++] = consonants[idx3]; - retval[j++] = '-'; - retval[j++] = consonants[idx4]; - seed = ((seed * 5) + - ((((u_int)(dgst_raw[2 * i])) * 7) + - ((u_int)(dgst_raw[(2 * i) + 1])))) % 36; - } - } else { - idx0 = seed % 6; - idx1 = 16; - idx2 = seed / 6; - retval[j++] = vowels[idx0]; - retval[j++] = consonants[idx1]; - retval[j++] = vowels[idx2]; - } - } - retval[j++] = 'x'; - retval[j++] = '\0'; - return retval; -} - -char * -key_fingerprint(const Key *k, enum fp_type dgst_type, enum fp_rep dgst_rep) -{ - char *retval = NULL; - u_char *dgst_raw; - 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) { - case SSH_FP_HEX: - retval = key_fingerprint_hex(dgst_raw, dgst_raw_len); - break; - case SSH_FP_BUBBLEBABBLE: - retval = key_fingerprint_bubblebabble(dgst_raw, dgst_raw_len); - break; - default: - fatal("key_fingerprint_ex: bad digest representation %d", - dgst_rep); - break; - } - memset(dgst_raw, 0, dgst_raw_len); - xfree(dgst_raw); - return retval; -} - -/* - * Reads a multiple-precision integer in decimal from the buffer, and advances - * the pointer. The integer must already be initialized. This function is - * permitted to modify the buffer. This leaves *cpp to point just beyond the - * last processed (and maybe modified) character. Note that this may modify - * the buffer containing the number. - */ -static int -read_bignum(char **cpp, BIGNUM * value) -{ - char *cp = *cpp; - int old; - - /* Skip any leading whitespace. */ - for (; *cp == ' ' || *cp == '\t'; cp++) - ; - - /* Check that it begins with a decimal digit. */ - if (*cp < '0' || *cp > '9') - return 0; - - /* Save starting position. */ - *cpp = cp; - - /* Move forward until all decimal digits skipped. */ - for (; *cp >= '0' && *cp <= '9'; cp++) - ; - - /* Save the old terminating character, and replace it by \0. */ - old = *cp; - *cp = 0; - - /* Parse the number. */ - if (BN_dec2bn(&value, *cpp) == 0) - return 0; - - /* Restore old terminating character. */ - *cp = old; - - /* Move beyond the number and return success. */ - *cpp = cp; - return 1; -} - -static int -write_bignum(FILE *f, BIGNUM *num) -{ - char *buf = BN_bn2dec(num); - if (buf == NULL) { - error("write_bignum: BN_bn2dec() failed"); - return 0; - } - fprintf(f, " %s", buf); - OPENSSL_free(buf); - return 1; -} - -/* returns 1 ok, -1 error */ -int -key_read(Key *ret, char **cpp) -{ - Key *k; - int success = -1; - char *cp, *space; - int len, n, type; - u_int bits; - u_char *blob; - - cp = *cpp; - - switch (ret->type) { - case KEY_RSA1: - /* Get number of bits. */ - if (*cp < '0' || *cp > '9') - return -1; /* Bad bit count... */ - for (bits = 0; *cp >= '0' && *cp <= '9'; cp++) - bits = 10 * bits + *cp - '0'; - if (bits == 0) - return -1; - *cpp = cp; - /* Get public exponent, public modulus. */ - if (!read_bignum(cpp, ret->rsa->e)) - return -1; - if (!read_bignum(cpp, ret->rsa->n)) - return -1; - success = 1; - break; - case KEY_UNSPEC: - case KEY_RSA: - case KEY_DSA: - space = strchr(cp, ' '); - if (space == NULL) { - debug3("key_read: missing whitespace"); - return -1; - } - *space = '\0'; - type = key_type_from_name(cp); - *space = ' '; - if (type == KEY_UNSPEC) { - debug3("key_read: missing keytype"); - return -1; - } - cp = space+1; - if (*cp == '\0') { - debug3("key_read: short string"); - return -1; - } - if (ret->type == KEY_UNSPEC) { - ret->type = type; - } else if (ret->type != type) { - /* is a key, but different type */ - debug3("key_read: type mismatch"); - return -1; - } - len = 2*strlen(cp); - blob = xmalloc(len); - n = uudecode(cp, blob, len); - if (n < 0) { - error("key_read: uudecode %s failed", cp); - xfree(blob); - return -1; - } - k = key_from_blob(blob, (u_int)n); - xfree(blob); - if (k == NULL) { - error("key_read: key_from_blob %s failed", cp); - return -1; - } - if (k->type != type) { - error("key_read: type mismatch: encoding error"); - key_free(k); - return -1; - } -/*XXXX*/ - if (ret->type == KEY_RSA) { - if (ret->rsa != NULL) - RSA_free(ret->rsa); - ret->rsa = k->rsa; - k->rsa = NULL; - success = 1; -#ifdef DEBUG_PK - RSA_print_fp(stderr, ret->rsa, 8); -#endif - } else { - if (ret->dsa != NULL) - DSA_free(ret->dsa); - ret->dsa = k->dsa; - k->dsa = NULL; - success = 1; -#ifdef DEBUG_PK - DSA_print_fp(stderr, ret->dsa, 8); -#endif - } -/*XXXX*/ - key_free(k); - if (success != 1) - break; - /* advance cp: skip whitespace and data */ - while (*cp == ' ' || *cp == '\t') - cp++; - while (*cp != '\0' && *cp != ' ' && *cp != '\t') - cp++; - *cpp = cp; - break; - default: - fatal("key_read: bad key type: %d", ret->type); - break; - } - return success; -} - -int -key_write(const Key *key, FILE *f) -{ - 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' */ - bits = BN_num_bits(key->rsa->n); - fprintf(f, "%u", bits); - if (write_bignum(f, key->rsa->e) && - write_bignum(f, key->rsa->n)) { - success = 1; - } else { - error("key_write: failed for RSA key"); - } - } else if ((key->type == KEY_DSA && key->dsa != NULL) || - (key->type == KEY_RSA && key->rsa != NULL)) { - key_to_blob(key, &blob, &len); - uu = xmalloc(2*len); - n = uuencode(blob, len, uu, 2*len); - if (n > 0) { - fprintf(f, "%s %s", key_ssh_name(key), uu); - success = 1; - } - xfree(blob); - xfree(uu); - } - return success; -} - -const char * -key_type(const Key *k) -{ - switch (k->type) { - case KEY_RSA1: - return "RSA1"; - case KEY_RSA: - return "RSA"; - case KEY_DSA: - return "DSA"; - } - return "unknown"; -} - -const char * -key_ssh_name(const Key *k) -{ - switch (k->type) { - case KEY_RSA: - return "ssh-rsa"; - case KEY_DSA: - return "ssh-dss"; - } - return "ssh-unknown"; -} - -u_int -key_size(const Key *k) -{ - switch (k->type) { - case KEY_RSA1: - case KEY_RSA: - return BN_num_bits(k->rsa->n); - case KEY_DSA: - return BN_num_bits(k->dsa->p); - } - return 0; -} - -static RSA * -rsa_generate_private_key(u_int bits) -{ - RSA *private; - - private = RSA_generate_key(bits, 35, NULL, NULL); - if (private == NULL) - fatal("rsa_generate_private_key: key generation failed."); - return private; -} - -static DSA* -dsa_generate_private_key(u_int bits) -{ - DSA *private = DSA_generate_parameters(bits, NULL, 0, NULL, NULL, NULL, NULL); - - if (private == NULL) - fatal("dsa_generate_private_key: DSA_generate_parameters failed"); - if (!DSA_generate_key(private)) - fatal("dsa_generate_private_key: DSA_generate_key failed."); - if (private == NULL) - fatal("dsa_generate_private_key: NULL."); - return private; -} - -Key * -key_generate(int type, u_int bits) -{ - Key *k = key_new(KEY_UNSPEC); - switch (type) { - case KEY_DSA: - k->dsa = dsa_generate_private_key(bits); - break; - case KEY_RSA: - case KEY_RSA1: - k->rsa = rsa_generate_private_key(bits); - break; - default: - fatal("key_generate: unknown type %d", type); - } - k->type = type; - return k; -} - -Key * -key_from_private(const Key *k) -{ - Key *n = NULL; - switch (k->type) { - case KEY_DSA: - n = key_new(k->type); - if ((BN_copy(n->dsa->p, k->dsa->p) == NULL) || - (BN_copy(n->dsa->q, k->dsa->q) == NULL) || - (BN_copy(n->dsa->g, k->dsa->g) == NULL) || - (BN_copy(n->dsa->pub_key, k->dsa->pub_key) == NULL)) - fatal("key_from_private: BN_copy failed"); - break; - case KEY_RSA: - case KEY_RSA1: - n = key_new(k->type); - if ((BN_copy(n->rsa->n, k->rsa->n) == NULL) || - (BN_copy(n->rsa->e, k->rsa->e) == NULL)) - fatal("key_from_private: BN_copy failed"); - break; - default: - fatal("key_from_private: unknown type %d", k->type); - break; - } - return n; -} - -int -key_type_from_name(char *name) -{ - if (strcmp(name, "rsa1") == 0) { - return KEY_RSA1; - } else if (strcmp(name, "rsa") == 0) { - return KEY_RSA; - } else if (strcmp(name, "dsa") == 0) { - return KEY_DSA; - } else if (strcmp(name, "ssh-rsa") == 0) { - return KEY_RSA; - } else if (strcmp(name, "ssh-dss") == 0) { - return KEY_DSA; - } - debug2("key_type_from_name: unknown key type '%s'", name); - return KEY_UNSPEC; -} - -int -key_names_valid2(const char *names) -{ - char *s, *cp, *p; - - if (names == NULL || strcmp(names, "") == 0) - return 0; - s = cp = xstrdup(names); - for ((p = strsep(&cp, ",")); p && *p != '\0'; - (p = strsep(&cp, ","))) { - switch (key_type_from_name(p)) { - case KEY_RSA1: - case KEY_UNSPEC: - xfree(s); - return 0; - } - } - debug3("key names ok: [%s]", names); - xfree(s); - return 1; -} - -Key * -key_from_blob(const u_char *blob, u_int blen) -{ - Buffer b; - int rlen, type; - char *ktype = NULL; - Key *key = NULL; - -#ifdef DEBUG_PK - dump_base64(stderr, blob, blen); -#endif - buffer_init(&b); - buffer_append(&b, blob, blen); - if ((ktype = buffer_get_string_ret(&b, NULL)) == NULL) { - error("key_from_blob: can't read key type"); - goto out; - } - - type = key_type_from_name(ktype); - - switch (type) { - case KEY_RSA: - key = key_new(type); - if (buffer_get_bignum2_ret(&b, key->rsa->e) == -1 || - buffer_get_bignum2_ret(&b, key->rsa->n) == -1) { - error("key_from_blob: can't read rsa key"); - key_free(key); - key = NULL; - goto out; - } -#ifdef DEBUG_PK - RSA_print_fp(stderr, key->rsa, 8); -#endif - break; - case KEY_DSA: - key = key_new(type); - if (buffer_get_bignum2_ret(&b, key->dsa->p) == -1 || - buffer_get_bignum2_ret(&b, key->dsa->q) == -1 || - buffer_get_bignum2_ret(&b, key->dsa->g) == -1 || - buffer_get_bignum2_ret(&b, key->dsa->pub_key) == -1) { - error("key_from_blob: can't read dsa key"); - key_free(key); - key = NULL; - goto out; - } -#ifdef DEBUG_PK - DSA_print_fp(stderr, key->dsa, 8); -#endif - break; - case KEY_UNSPEC: - key = key_new(type); - break; - default: - error("key_from_blob: cannot handle type %s", ktype); - goto out; - } - rlen = buffer_len(&b); - if (key != NULL && rlen != 0) - error("key_from_blob: remaining bytes in key blob %d", rlen); - out: - if (ktype != NULL) - xfree(ktype); - buffer_free(&b); - return key; -} - -int -key_to_blob(const Key *key, u_char **blobp, u_int *lenp) -{ - Buffer b; - int len; - - if (key == NULL) { - error("key_to_blob: key == NULL"); - return 0; - } - buffer_init(&b); - switch (key->type) { - case KEY_DSA: - buffer_put_cstring(&b, key_ssh_name(key)); - buffer_put_bignum2(&b, key->dsa->p); - buffer_put_bignum2(&b, key->dsa->q); - buffer_put_bignum2(&b, key->dsa->g); - buffer_put_bignum2(&b, key->dsa->pub_key); - break; - case KEY_RSA: - buffer_put_cstring(&b, key_ssh_name(key)); - buffer_put_bignum2(&b, key->rsa->e); - buffer_put_bignum2(&b, key->rsa->n); - break; - default: - error("key_to_blob: unsupported key type %d", key->type); - buffer_free(&b); - return 0; - } - len = buffer_len(&b); - if (lenp != NULL) - *lenp = len; - 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( - const Key *key, - u_char **sigp, u_int *lenp, - const u_char *data, u_int datalen) -{ - switch (key->type) { - case KEY_DSA: - return ssh_dss_sign(key, sigp, lenp, data, datalen); - case KEY_RSA: - return ssh_rsa_sign(key, sigp, lenp, data, datalen); - default: - error("key_sign: invalid key type %d", key->type); - return -1; - } -} - -/* - * key_verify returns 1 for a correct signature, 0 for an incorrect signature - * and -1 on error. - */ -int -key_verify( - const Key *key, - const u_char *signature, u_int signaturelen, - const u_char *data, u_int datalen) -{ - if (signaturelen == 0) - return -1; - - switch (key->type) { - case KEY_DSA: - return ssh_dss_verify(key, signature, signaturelen, data, datalen); - case KEY_RSA: - return ssh_rsa_verify(key, signature, signaturelen, data, datalen); - default: - error("key_verify: invalid key type %d", key->type); - return -1; - } -} - -/* Converts a private to a public key */ -Key * -key_demote(const Key *k) -{ - Key *pk; - - pk = xcalloc(1, 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); -} |