X-Git-Url: https://vcs.fsf.org/?p=exim.git;a=blobdiff_plain;f=src%2Fsrc%2Fpdkim%2Frsa.h;h=6018eba64950b932d97d220d2c34a20ab2bdb598;hp=8db06cd70295032c39734de9e48babcddb6c0c9b;hb=63af6f3a15c5c4779761761bd4d6185e4679eafc;hpb=b9d8b5586790946de2fef94e0b8c43d573a71090;ds=inline diff --git a/src/src/pdkim/rsa.h b/src/src/pdkim/rsa.h index 8db06cd70..6018eba64 100644 --- a/src/src/pdkim/rsa.h +++ b/src/src/pdkim/rsa.h @@ -1,421 +1,81 @@ -/** - * \file rsa.h - * - * Copyright (C) 2006-2010, Brainspark B.V. - * - * This file is part of PolarSSL (http://www.polarssl.org) - * Lead Maintainer: Paul Bakker - * - * All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -/* $Cambridge: exim/src/src/pdkim/rsa.h,v 1.3 2009/12/07 13:05:07 tom Exp $ */ - -#ifndef POLARSSL_RSA_H -#define POLARSSL_RSA_H - -#include "bignum.h" - -/* - * RSA Error codes - */ -#define POLARSSL_ERR_RSA_BAD_INPUT_DATA -0x0400 -#define POLARSSL_ERR_RSA_INVALID_PADDING -0x0410 -#define POLARSSL_ERR_RSA_KEY_GEN_FAILED -0x0420 -#define POLARSSL_ERR_RSA_KEY_CHECK_FAILED -0x0430 -#define POLARSSL_ERR_RSA_PUBLIC_FAILED -0x0440 -#define POLARSSL_ERR_RSA_PRIVATE_FAILED -0x0450 -#define POLARSSL_ERR_RSA_VERIFY_FAILED -0x0460 -#define POLARSSL_ERR_RSA_OUTPUT_TOO_LARGE -0x0470 -#define POLARSSL_ERR_RSA_RNG_FAILED -0x0480 - -/* *************** begin copy from x509.h ************************/ -/* - * ASN1 Error codes - * - * These error codes will be OR'ed to X509 error codes for - * higher error granularity. - */ -#define POLARSSL_ERR_ASN1_OUT_OF_DATA 0x0014 -#define POLARSSL_ERR_ASN1_UNEXPECTED_TAG 0x0016 -#define POLARSSL_ERR_ASN1_INVALID_LENGTH 0x0018 -#define POLARSSL_ERR_ASN1_LENGTH_MISMATCH 0x001A -#define POLARSSL_ERR_ASN1_INVALID_DATA 0x001C - -/* - * X509 Error codes - */ -#define POLARSSL_ERR_X509_FEATURE_UNAVAILABLE -0x0020 -#define POLARSSL_ERR_X509_CERT_INVALID_PEM -0x0040 -#define POLARSSL_ERR_X509_CERT_INVALID_FORMAT -0x0060 -#define POLARSSL_ERR_X509_CERT_INVALID_VERSION -0x0080 -#define POLARSSL_ERR_X509_CERT_INVALID_SERIAL -0x00A0 -#define POLARSSL_ERR_X509_CERT_INVALID_ALG -0x00C0 -#define POLARSSL_ERR_X509_CERT_INVALID_NAME -0x00E0 -#define POLARSSL_ERR_X509_CERT_INVALID_DATE -0x0100 -#define POLARSSL_ERR_X509_CERT_INVALID_PUBKEY -0x0120 -#define POLARSSL_ERR_X509_CERT_INVALID_SIGNATURE -0x0140 -#define POLARSSL_ERR_X509_CERT_INVALID_EXTENSIONS -0x0160 -#define POLARSSL_ERR_X509_CERT_UNKNOWN_VERSION -0x0180 -#define POLARSSL_ERR_X509_CERT_UNKNOWN_SIG_ALG -0x01A0 -#define POLARSSL_ERR_X509_CERT_UNKNOWN_PK_ALG -0x01C0 -#define POLARSSL_ERR_X509_CERT_SIG_MISMATCH -0x01E0 -#define POLARSSL_ERR_X509_CERT_VERIFY_FAILED -0x0200 -#define POLARSSL_ERR_X509_KEY_INVALID_PEM -0x0220 -#define POLARSSL_ERR_X509_KEY_INVALID_VERSION -0x0240 -#define POLARSSL_ERR_X509_KEY_INVALID_FORMAT -0x0260 -#define POLARSSL_ERR_X509_KEY_INVALID_ENC_IV -0x0280 -#define POLARSSL_ERR_X509_KEY_UNKNOWN_ENC_ALG -0x02A0 -#define POLARSSL_ERR_X509_KEY_PASSWORD_REQUIRED -0x02C0 -#define POLARSSL_ERR_X509_KEY_PASSWORD_MISMATCH -0x02E0 -#define POLARSSL_ERR_X509_POINT_ERROR -0x0300 -#define POLARSSL_ERR_X509_VALUE_TO_LENGTH -0x0320 - -/* - * DER constants - */ -#define ASN1_BOOLEAN 0x01 -#define ASN1_INTEGER 0x02 -#define ASN1_BIT_STRING 0x03 -#define ASN1_OCTET_STRING 0x04 -#define ASN1_NULL 0x05 -#define ASN1_OID 0x06 -#define ASN1_UTF8_STRING 0x0C -#define ASN1_SEQUENCE 0x10 -#define ASN1_SET 0x11 -#define ASN1_PRINTABLE_STRING 0x13 -#define ASN1_T61_STRING 0x14 -#define ASN1_IA5_STRING 0x16 -#define ASN1_UTC_TIME 0x17 -#define ASN1_GENERALIZED_TIME 0x18 -#define ASN1_UNIVERSAL_STRING 0x1C -#define ASN1_BMP_STRING 0x1E -#define ASN1_PRIMITIVE 0x00 -#define ASN1_CONSTRUCTED 0x20 -#define ASN1_CONTEXT_SPECIFIC 0x80 -/* *************** end copy from x509.h ************************/ - -/* - * PKCS#1 constants - */ -#define SIG_RSA_RAW 0 -#define SIG_RSA_MD2 2 -#define SIG_RSA_MD4 3 -#define SIG_RSA_MD5 4 -#define SIG_RSA_SHA1 5 -#define SIG_RSA_SHA224 14 -#define SIG_RSA_SHA256 11 -#define SIG_RSA_SHA384 12 -#define SIG_RSA_SHA512 13 - -#define RSA_PUBLIC 0 -#define RSA_PRIVATE 1 - -#define RSA_PKCS_V15 0 -#define RSA_PKCS_V21 1 - -#define RSA_SIGN 1 -#define RSA_CRYPT 2 - -#define ASN1_STR_CONSTRUCTED_SEQUENCE "\x30" -#define ASN1_STR_NULL "\x05" -#define ASN1_STR_OID "\x06" -#define ASN1_STR_OCTET_STRING "\x04" - -#define OID_DIGEST_ALG_MDX "\x2A\x86\x48\x86\xF7\x0D\x02\x00" -#define OID_HASH_ALG_SHA1 "\x2b\x0e\x03\x02\x1a" -#define OID_HASH_ALG_SHA2X "\x60\x86\x48\x01\x65\x03\x04\x02\x00" - -#define OID_ISO_MEMBER_BODIES "\x2a" -#define OID_ISO_IDENTIFIED_ORG "\x2b" - /* - * ISO Member bodies OID parts - */ -#define OID_COUNTRY_US "\x86\x48" -#define OID_RSA_DATA_SECURITY "\x86\xf7\x0d" - -/* - * ISO Identified organization OID parts - */ -#define OID_OIW_SECSIG_SHA1 "\x0e\x03\x02\x1a" - -/* - * DigestInfo ::= SEQUENCE { - * digestAlgorithm DigestAlgorithmIdentifier, - * digest Digest } + * PDKIM - a RFC4871 (DKIM) implementation * - * DigestAlgorithmIdentifier ::= AlgorithmIdentifier + * Copyright (C) 2016 Exim maintainers * - * Digest ::= OCTET STRING + * RSA signing/verification interface */ -#define ASN1_HASH_MDX \ -( \ - ASN1_STR_CONSTRUCTED_SEQUENCE "\x20" \ - ASN1_STR_CONSTRUCTED_SEQUENCE "\x0C" \ - ASN1_STR_OID "\x08" \ - OID_DIGEST_ALG_MDX \ - ASN1_STR_NULL "\x00" \ - ASN1_STR_OCTET_STRING "\x10" \ -) - -#define ASN1_HASH_SHA1 \ - ASN1_STR_CONSTRUCTED_SEQUENCE "\x21" \ - ASN1_STR_CONSTRUCTED_SEQUENCE "\x09" \ - ASN1_STR_OID "\x05" \ - OID_HASH_ALG_SHA1 \ - ASN1_STR_NULL "\x00" \ - ASN1_STR_OCTET_STRING "\x14" - -#define ASN1_HASH_SHA2X \ - ASN1_STR_CONSTRUCTED_SEQUENCE "\x11" \ - ASN1_STR_CONSTRUCTED_SEQUENCE "\x0d" \ - ASN1_STR_OID "\x09" \ - OID_HASH_ALG_SHA2X \ - ASN1_STR_NULL "\x00" \ - ASN1_STR_OCTET_STRING "\x00" - -/** - * \brief RSA context structure - */ -typedef struct -{ - int ver; /*!< always 0 */ - int len; /*!< size(N) in chars */ - - mpi N; /*!< public modulus */ - mpi E; /*!< public exponent */ - mpi D; /*!< private exponent */ - mpi P; /*!< 1st prime factor */ - mpi Q; /*!< 2nd prime factor */ - mpi DP; /*!< D % (P - 1) */ - mpi DQ; /*!< D % (Q - 1) */ - mpi QP; /*!< 1 / (Q % P) */ +#include "../exim.h" - mpi RN; /*!< cached R^2 mod N */ - mpi RP; /*!< cached R^2 mod P */ - mpi RQ; /*!< cached R^2 mod Q */ +#ifndef DISABLE_DKIM /* entire file */ - int padding; /*!< 1.5 or OAEP/PSS */ - int hash_id; /*!< hash identifier */ -} -rsa_context; +#include "crypt_ver.h" -#ifdef __cplusplus -extern "C" { +#ifdef RSA_OPENSSL +# include +# include +# include +#elif defined(RSA_GNUTLS) +# include +# include +# include +#elif defined(RSA_GCRYPT) +# include +# include #endif -/** - * \brief Initialize an RSA context - * - * \param ctx RSA context to be initialized - * \param padding RSA_PKCS_V15 or RSA_PKCS_V21 - * \param hash_id RSA_PKCS_V21 hash identifier - * - * \note The hash_id parameter is actually ignored - * when using RSA_PKCS_V15 padding. - * - * \note Currently, RSA_PKCS_V21 padding - * is not supported. - */ -void rsa_init( rsa_context *ctx, - int padding, - int hash_id); +#include "../blob.h" -/** - * \brief Generate an RSA keypair - * - * \param ctx RSA context that will hold the key - * \param f_rng RNG function - * \param p_rng RNG parameter - * \param nbits size of the public key in bits - * \param exponent public exponent (e.g., 65537) - * - * \note rsa_init() must be called beforehand to setup - * the RSA context. - * - * \return 0 if successful, or an POLARSSL_ERR_RSA_XXX error code - */ -int rsa_gen_key( rsa_context *ctx, - int (*f_rng)(void *), - void *p_rng, - int nbits, int exponent ); -/** - * \brief Check a public RSA key - * - * \param ctx RSA context to be checked - * - * \return 0 if successful, or an POLARSSL_ERR_RSA_XXX error code - */ -int rsa_check_pubkey( const rsa_context *ctx ); +#ifdef RSA_OPENSSL -/** - * \brief Check a private RSA key - * - * \param ctx RSA context to be checked - * - * \return 0 if successful, or an POLARSSL_ERR_RSA_XXX error code - */ -int rsa_check_privkey( const rsa_context *ctx ); +typedef struct { + RSA * rsa; +} es_ctx; -/** - * \brief Do an RSA public key operation - * - * \param ctx RSA context - * \param input input buffer - * \param output output buffer - * - * \return 0 if successful, or an POLARSSL_ERR_RSA_XXX error code - * - * \note This function does NOT take care of message - * padding. Also, be sure to set input[0] = 0 or assure that - * input is smaller than N. - * - * \note The input and output buffers must be large - * enough (eg. 128 bytes if RSA-1024 is used). - */ -int rsa_public( rsa_context *ctx, - const unsigned char *input, - unsigned char *output ); +typedef struct { + RSA * rsa; +} ev_ctx; -/** - * \brief Do an RSA private key operation - * - * \param ctx RSA context - * \param input input buffer - * \param output output buffer - * - * \return 0 if successful, or an POLARSSL_ERR_RSA_XXX error code - * - * \note The input and output buffers must be large - * enough (eg. 128 bytes if RSA-1024 is used). - */ -int rsa_private( rsa_context *ctx, - const unsigned char *input, - unsigned char *output ); +#elif defined(RSA_GNUTLS) -/** - * \brief Add the message padding, then do an RSA operation - * - * \param ctx RSA context - * \param f_rng RNG function - * \param p_rng RNG parameter - * \param mode RSA_PUBLIC or RSA_PRIVATE - * \param ilen contains the plaintext length - * \param input buffer holding the data to be encrypted - * \param output buffer that will hold the ciphertext - * - * \return 0 if successful, or an POLARSSL_ERR_RSA_XXX error code - * - * \note The output buffer must be as large as the size - * of ctx->N (eg. 128 bytes if RSA-1024 is used). - */ -int rsa_pkcs1_encrypt( rsa_context *ctx, - int (*f_rng)(void *), - void *p_rng, - int mode, int ilen, - const unsigned char *input, - unsigned char *output ); +typedef struct { + gnutls_x509_privkey_t rsa; +} es_ctx; -/** - * \brief Do an RSA operation, then remove the message padding - * - * \param ctx RSA context - * \param mode RSA_PUBLIC or RSA_PRIVATE - * \param input buffer holding the encrypted data - * \param output buffer that will hold the plaintext - * \param olen will contain the plaintext length - * \param output_max_len maximum length of the output buffer - * - * \return 0 if successful, or an POLARSSL_ERR_RSA_XXX error code - * - * \note The output buffer must be as large as the size - * of ctx->N (eg. 128 bytes if RSA-1024 is used) otherwise - * an error is thrown. - */ -int rsa_pkcs1_decrypt( rsa_context *ctx, - int mode, int *olen, - const unsigned char *input, - unsigned char *output, - int output_max_len ); +typedef struct { + gnutls_pubkey_t rsa; +} ev_ctx; -/** - * \brief Do a private RSA to sign a message digest - * - * \param ctx RSA context - * \param mode RSA_PUBLIC or RSA_PRIVATE - * \param hash_id SIG_RSA_RAW, SIG_RSA_MD{2,4,5} or SIG_RSA_SHA{1,224,256,384,512} - * \param hashlen message digest length (for SIG_RSA_RAW only) - * \param hash buffer holding the message digest - * \param sig buffer that will hold the ciphertext - * - * \return 0 if the signing operation was successful, - * or an POLARSSL_ERR_RSA_XXX error code - * - * \note The "sig" buffer must be as large as the size - * of ctx->N (eg. 128 bytes if RSA-1024 is used). - */ -int rsa_pkcs1_sign( rsa_context *ctx, - int mode, - int hash_id, - int hashlen, - const unsigned char *hash, - unsigned char *sig ); +#elif defined(RSA_GCRYPT) -/** - * \brief Do a public RSA and check the message digest - * - * \param ctx points to an RSA public key - * \param mode RSA_PUBLIC or RSA_PRIVATE - * \param hash_id SIG_RSA_RAW, SIG_RSA_MD{2,4,5} or SIG_RSA_SHA{1,224,256,384,512} - * \param hashlen message digest length (for SIG_RSA_RAW only) - * \param hash buffer holding the message digest - * \param sig buffer holding the ciphertext - * - * \return 0 if the verify operation was successful, - * or an POLARSSL_ERR_RSA_XXX error code - * - * \note The "sig" buffer must be as large as the size - * of ctx->N (eg. 128 bytes if RSA-1024 is used). - */ -int rsa_pkcs1_verify( rsa_context *ctx, - int mode, - int hash_id, - int hashlen, - const unsigned char *hash, - unsigned char *sig ); +typedef struct { + gcry_mpi_t n; + gcry_mpi_t e; + gcry_mpi_t d; + gcry_mpi_t p; + gcry_mpi_t q; + gcry_mpi_t dp; + gcry_mpi_t dq; + gcry_mpi_t qp; +} es_ctx; -/** - * \brief Free the components of an RSA key - * - * \param ctx RSA Context to free - */ -void rsa_free( rsa_context *ctx ); +typedef struct { + gcry_mpi_t n; + gcry_mpi_t e; +} ev_ctx; -/* PDKIM declarations (not part of polarssl) */ -int rsa_parse_public_key( rsa_context *rsa, unsigned char *buf, int buflen ); -int rsa_parse_key( rsa_context *rsa, unsigned char *buf, int buflen, - unsigned char *pwd, int pwdlen ); +#endif -#ifdef __cplusplus -} -#endif +extern void exim_rsa_init(void); +extern blob * exim_rsa_data_append(blob *, int *, uschar *); + +extern const uschar * exim_rsa_signing_init(uschar *, es_ctx *); +extern const uschar * exim_rsa_sign(es_ctx *, BOOL, blob *, blob *); +extern const uschar * exim_rsa_verify_init(blob *, ev_ctx *); +extern const uschar * exim_rsa_verify(ev_ctx *, BOOL, blob *, blob *); -#endif /* rsa.h */ +#endif /*DISABLE_DKIM*/ +/* End of File */