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- (djm) [cipher.c configure.ac openbsd-compat/openssl-compat.h]
Fix merge botch, automatically detect AES-GCM in OpenSSL, move a little cipher compat code to openssl-compat.h
This commit is contained in:
Damien Miller
parent
1d75abfe23
commit
d522c68872
@ -37,6 +37,9 @@
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[myproposal.h packet.c ssh_config.5 sshd_config.5]
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support AES-GCM as defined in RFC 5647 (but with simpler KEX handling)
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ok and feedback djm@
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- (djm) [cipher.c configure.ac openbsd-compat/openssl-compat.h]
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Fix merge botch, automatically detect AES-GCM in OpenSSL, move a little
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cipher compat code to openssl-compat.h
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20121217
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- (dtucker) [Makefile.in] Add some scaffolding so that the new regress
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21
cipher.c
21
cipher.c
@ -54,25 +54,18 @@
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extern const EVP_CIPHER *evp_ssh1_bf(void);
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extern const EVP_CIPHER *evp_ssh1_3des(void);
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extern void ssh1_3des_iv(EVP_CIPHER_CTX *, int, u_char *, int);
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#ifndef OPENSSL_HAVE_EVPCTR
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#define EVP_aes_128_ctr evp_aes_128_ctr
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#define EVP_aes_192_ctr evp_aes_128_ctr
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#define EVP_aes_256_ctr evp_aes_128_ctr
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extern const EVP_CIPHER *evp_aes_128_ctr(void);
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extern void ssh_aes_ctr_iv(EVP_CIPHER_CTX *, int, u_char *, u_int);
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#endif
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struct Cipher {
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char *name;
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int number; /* for ssh1 only */
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u_int block_size;
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u_int key_len;
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u_int iv_len; /* defaults to block_size */
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u_int auth_len;
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u_int discard_len;
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u_int cbc_mode;
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const EVP_CIPHER *(*evptype)(void);
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} ciphers[] = {
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{ NULL, SSH_CIPHER_INVALID, 0, 0, 0, 0, NULL }
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{ "none", SSH_CIPHER_NONE, 8, 0, 0, 0, 0, 0, EVP_enc_null },
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{ "des", SSH_CIPHER_DES, 8, 8, 0, 0, 0, 1, EVP_des_cbc },
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{ "3des", SSH_CIPHER_3DES, 8, 16, 0, 0, 0, 1, evp_ssh1_3des },
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@ -94,10 +87,12 @@ struct Cipher {
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{ "aes128-ctr", SSH_CIPHER_SSH2, 16, 16, 0, 0, 0, 0, EVP_aes_128_ctr },
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{ "aes192-ctr", SSH_CIPHER_SSH2, 16, 24, 0, 0, 0, 0, EVP_aes_192_ctr },
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{ "aes256-ctr", SSH_CIPHER_SSH2, 16, 32, 0, 0, 0, 0, EVP_aes_256_ctr },
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#ifdef OPENSSL_HAVE_EVPGCM
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{ "aes128-gcm@openssh.com",
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SSH_CIPHER_SSH2, 16, 16, 12, 16, 0, 0, EVP_aes_128_gcm },
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{ "aes256-gcm@openssh.com",
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SSH_CIPHER_SSH2, 16, 32, 12, 16, 0, 0, EVP_aes_256_gcm },
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#endif
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#ifdef USE_CIPHER_ACSS
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{ "acss@openssh.org",
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SSH_CIPHER_SSH2, 16, 5, 0, 0, 0, 0, EVP_acss },
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@ -473,14 +468,6 @@ cipher_set_keyiv(CipherContext *cc, u_char *iv)
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}
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}
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#if OPENSSL_VERSION_NUMBER < 0x00907000L
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#define EVP_X_STATE(evp) &(evp).c
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#define EVP_X_STATE_LEN(evp) sizeof((evp).c)
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#else
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#define EVP_X_STATE(evp) (evp).cipher_data
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#define EVP_X_STATE_LEN(evp) (evp).cipher->ctx_size
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#endif
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int
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cipher_get_keycontext(const CipherContext *cc, u_char *dat)
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{
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24
configure.ac
24
configure.ac
@ -1,4 +1,4 @@
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# $Id: configure.ac,v 1.499 2012/12/12 21:18:56 djm Exp $
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# $Id: configure.ac,v 1.500 2013/01/09 05:42:47 djm Exp $
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#
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# Copyright (c) 1999-2004 Damien Miller
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#
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@ -15,7 +15,7 @@
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# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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AC_INIT([OpenSSH], [Portable], [openssh-unix-dev@mindrot.org])
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AC_REVISION($Revision: 1.499 $)
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AC_REVISION($Revision: 1.500 $)
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AC_CONFIG_SRCDIR([ssh.c])
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AC_LANG([C])
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@ -2320,6 +2320,26 @@ AC_LINK_IFELSE(
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]
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)
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# Check for OpenSSL with EVP_aes_*gcm
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AC_MSG_CHECKING([whether OpenSSL has AES GCM via EVP])
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AC_LINK_IFELSE(
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[AC_LANG_PROGRAM([[
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#include <string.h>
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#include <openssl/evp.h>
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]], [[
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exit(EVP_aes_128_gcm() == NULL ||
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EVP_aes_256_gcm() == NULL);
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]])],
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[
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AC_MSG_RESULT([yes])
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AC_DEFINE([OPENSSL_HAVE_EVPGCM], [1],
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[libcrypto has EVP AES GCM])
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],
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[
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AC_MSG_RESULT([no])
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]
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)
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AC_MSG_CHECKING([if EVP_DigestUpdate returns an int])
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AC_LINK_IFELSE(
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[AC_LANG_PROGRAM([[
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@ -1,4 +1,4 @@
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/* $Id: openssl-compat.h,v 1.20 2012/01/17 03:03:39 dtucker Exp $ */
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/* $Id: openssl-compat.h,v 1.21 2013/01/09 05:42:49 djm Exp $ */
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/*
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* Copyright (c) 2005 Darren Tucker <dtucker@zip.com.au>
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@ -63,6 +63,30 @@ extern const EVP_CIPHER *evp_rijndael(void);
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extern void ssh_rijndael_iv(EVP_CIPHER_CTX *, int, u_char *, u_int);
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#endif
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#ifndef OPENSSL_HAVE_EVPCTR
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#define EVP_aes_128_ctr evp_aes_128_ctr
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#define EVP_aes_192_ctr evp_aes_128_ctr
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#define EVP_aes_256_ctr evp_aes_128_ctr
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extern const EVP_CIPHER *evp_aes_128_ctr(void);
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extern void ssh_aes_ctr_iv(EVP_CIPHER_CTX *, int, u_char *, u_int);
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#endif
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/* Avoid some #ifdef. Code that uses these is unreachable without GCM */
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#if !defined(OPENSSL_HAVE_EVPGCM) && !defined(EVP_CTRL_GCM_SET_IV_FIXED)
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# define EVP_CTRL_GCM_SET_IV_FIXED -1
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# define EVP_CTRL_GCM_IV_GEN -1
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# define EVP_CTRL_GCM_SET_TAG -1
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# define EVP_CTRL_GCM_GET_TAG -1
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#endif
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#if OPENSSL_VERSION_NUMBER < 0x00907000L
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#define EVP_X_STATE(evp) &(evp).c
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#define EVP_X_STATE_LEN(evp) sizeof((evp).c)
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#else
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#define EVP_X_STATE(evp) (evp).cipher_data
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#define EVP_X_STATE_LEN(evp) (evp).cipher->ctx_size
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#endif
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#if !defined(EVP_CTRL_SET_ACSS_MODE)
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# if (OPENSSL_VERSION_NUMBER >= 0x00907000L)
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# define USE_CIPHER_ACSS 1
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