202 lines
7.5 KiB
C
202 lines
7.5 KiB
C
/*
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* Copyright (c) 1997 - 2016 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef HEIMDAL_SMALLER
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#define DES3_OLD_ENCTYPE 1
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#endif
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struct _krb5_key_data {
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krb5_keyblock *key;
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krb5_data *schedule;
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};
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struct _krb5_key_usage;
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struct krb5_crypto_data {
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struct _krb5_encryption_type *et;
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struct _krb5_key_data key;
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int num_key_usage;
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struct _krb5_key_usage *key_usage;
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};
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#define CRYPTO_ETYPE(C) ((C)->et->type)
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/* bits for `flags' below */
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#define F_KEYED 0x0001 /* checksum is keyed */
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#define F_CPROOF 0x0002 /* checksum is collision proof */
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#define F_DERIVED 0x0004 /* uses derived keys */
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#define F_VARIANT 0x0008 /* uses `variant' keys (6.4.3) */
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#define F_PSEUDO 0x0010 /* not a real protocol type */
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#define F_DISABLED 0x0020 /* enctype/checksum disabled */
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#define F_WEAK 0x0040 /* enctype is considered weak */
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#define F_RFC3961_ENC 0x0100 /* RFC3961 simplified profile */
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#define F_SPECIAL 0x0200 /* backwards */
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#define F_ENC_THEN_CKSUM 0x0400 /* checksum is over encrypted data */
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#define F_CRYPTO_MASK 0x0F00
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#define F_RFC3961_KDF 0x1000 /* RFC3961 KDF */
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#define F_SP800_108_HMAC_KDF 0x2000 /* SP800-108 HMAC KDF */
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#define F_KDF_MASK 0xF000
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struct salt_type {
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krb5_salttype type;
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const char *name;
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krb5_error_code (*string_to_key)(krb5_context, krb5_enctype, krb5_data,
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krb5_salt, krb5_data, krb5_keyblock*);
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};
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struct _krb5_key_type {
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krb5_enctype type;
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const char *name;
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size_t bits;
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size_t size;
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size_t schedule_size;
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void (*random_key)(krb5_context, krb5_keyblock*);
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void (*schedule)(krb5_context, struct _krb5_key_type *, struct _krb5_key_data *);
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struct salt_type *string_to_key;
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void (*random_to_key)(krb5_context, krb5_keyblock*, const void*, size_t);
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void (*cleanup)(krb5_context, struct _krb5_key_data *);
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const EVP_CIPHER *(*evp)(void);
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};
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struct _krb5_checksum_type {
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krb5_cksumtype type;
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const char *name;
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size_t blocksize;
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size_t checksumsize;
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unsigned flags;
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krb5_error_code (*checksum)(krb5_context context,
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struct _krb5_key_data *key,
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const void *buf, size_t len,
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unsigned usage,
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Checksum *csum);
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krb5_error_code (*verify)(krb5_context context,
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struct _krb5_key_data *key,
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const void *buf, size_t len,
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unsigned usage,
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Checksum *csum);
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};
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struct _krb5_encryption_type {
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krb5_enctype type;
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const char *name;
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const char *alias;
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size_t blocksize;
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size_t padsize;
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size_t confoundersize;
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struct _krb5_key_type *keytype;
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struct _krb5_checksum_type *checksum;
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struct _krb5_checksum_type *keyed_checksum;
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unsigned flags;
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krb5_error_code (*encrypt)(krb5_context context,
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struct _krb5_key_data *key,
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void *data, size_t len,
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krb5_boolean encryptp,
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int usage,
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void *ivec);
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size_t prf_length;
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krb5_error_code (*prf)(krb5_context,
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krb5_crypto, const krb5_data *, krb5_data *);
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};
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#define ENCRYPTION_USAGE(U) (((U) << 8) | 0xAA)
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#define INTEGRITY_USAGE(U) (((U) << 8) | 0x55)
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#define CHECKSUM_USAGE(U) (((U) << 8) | 0x99)
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/* Checksums */
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extern struct _krb5_checksum_type _krb5_checksum_none;
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extern struct _krb5_checksum_type _krb5_checksum_crc32;
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extern struct _krb5_checksum_type _krb5_checksum_rsa_md4;
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extern struct _krb5_checksum_type _krb5_checksum_rsa_md4_des;
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extern struct _krb5_checksum_type _krb5_checksum_rsa_md5_des;
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extern struct _krb5_checksum_type _krb5_checksum_rsa_md5_des3;
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extern struct _krb5_checksum_type _krb5_checksum_rsa_md5;
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extern struct _krb5_checksum_type _krb5_checksum_hmac_sha1_des3;
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extern struct _krb5_checksum_type _krb5_checksum_hmac_sha1_aes128;
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extern struct _krb5_checksum_type _krb5_checksum_hmac_sha1_aes256;
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extern struct _krb5_checksum_type _krb5_checksum_hmac_sha256_128_aes128;
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extern struct _krb5_checksum_type _krb5_checksum_hmac_sha384_192_aes256;
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extern struct _krb5_checksum_type _krb5_checksum_hmac_md5;
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extern struct _krb5_checksum_type _krb5_checksum_sha1;
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extern struct _krb5_checksum_type _krb5_checksum_sha2;
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extern struct _krb5_checksum_type *_krb5_checksum_types[];
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extern int _krb5_num_checksums;
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/* Salts */
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extern struct salt_type _krb5_AES_SHA1_salt[];
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extern struct salt_type _krb5_AES_SHA2_salt[];
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extern struct salt_type _krb5_arcfour_salt[];
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extern struct salt_type _krb5_des_salt[];
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extern struct salt_type _krb5_des3_salt[];
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extern struct salt_type _krb5_des3_salt_derived[];
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/* Encryption types */
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extern struct _krb5_encryption_type _krb5_enctype_aes256_cts_hmac_sha1;
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extern struct _krb5_encryption_type _krb5_enctype_aes128_cts_hmac_sha1;
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extern struct _krb5_encryption_type _krb5_enctype_aes128_cts_hmac_sha256_128;
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extern struct _krb5_encryption_type _krb5_enctype_aes256_cts_hmac_sha384_192;
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extern struct _krb5_encryption_type _krb5_enctype_des3_cbc_sha1;
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extern struct _krb5_encryption_type _krb5_enctype_des3_cbc_md5;
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extern struct _krb5_encryption_type _krb5_enctype_des3_cbc_none;
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extern struct _krb5_encryption_type _krb5_enctype_arcfour_hmac_md5;
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extern struct _krb5_encryption_type _krb5_enctype_des_cbc_md5;
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extern struct _krb5_encryption_type _krb5_enctype_old_des3_cbc_sha1;
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extern struct _krb5_encryption_type _krb5_enctype_des_cbc_crc;
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extern struct _krb5_encryption_type _krb5_enctype_des_cbc_md4;
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extern struct _krb5_encryption_type _krb5_enctype_des_cbc_md5;
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extern struct _krb5_encryption_type _krb5_enctype_des_cbc_none;
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extern struct _krb5_encryption_type _krb5_enctype_des_cfb64_none;
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extern struct _krb5_encryption_type _krb5_enctype_des_pcbc_none;
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extern struct _krb5_encryption_type _krb5_enctype_null;
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extern struct _krb5_encryption_type *_krb5_etypes[];
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extern int _krb5_num_etypes;
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/* NO_HCRYPTO_POLLUTION is defined in pkinit-ec.c. See commentary there. */
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#ifndef NO_HCRYPTO_POLLUTION
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/* Interface to the EVP crypto layer provided by hcrypto */
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struct _krb5_evp_schedule {
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/*
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* Normally we'd say EVP_CIPHER_CTX here, but! this header gets
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* included in lib/krb5/pkinit-ec.ck
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*/
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EVP_CIPHER_CTX ectx;
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EVP_CIPHER_CTX dctx;
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};
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#endif
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