diff options
Diffstat (limited to 'src/libstrongswan/pgp')
| -rw-r--r-- | src/libstrongswan/pgp/pgp.c | 93 | ||||
| -rw-r--r-- | src/libstrongswan/pgp/pgp.h | 115 |
2 files changed, 208 insertions, 0 deletions
diff --git a/src/libstrongswan/pgp/pgp.c b/src/libstrongswan/pgp/pgp.c new file mode 100644 index 000000000..613c318c1 --- /dev/null +++ b/src/libstrongswan/pgp/pgp.c @@ -0,0 +1,93 @@ +/* + * Copyright (C) 2002-2009 Andreas Steffen + * + * Hochschule fuer Technik Rapperswil + * + * 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. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * 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. + */ + +#include "pgp.h" + +ENUM_BEGIN(pgp_packet_tag_names, PGP_PKT_RESERVED, PGP_PKT_PUBLIC_SUBKEY, + "Reserved", + "Public-Key Encrypted Session Key Packet", + "Signature Packet", + "Symmetric-Key Encrypted Session Key Packet", + "One-Pass Signature Packet", + "Secret Key Packet", + "Public Key Packet", + "Secret Subkey Packet", + "Compressed Data Packet", + "Symmetrically Encrypted Data Packet", + "Marker Packet", + "Literal Data Packet", + "Trust Packet", + "User ID Packet", + "Public Subkey Packet" +); +ENUM_NEXT(pgp_packet_tag_names, PGP_PKT_USER_ATTRIBUTE, PGP_PKT_MOD_DETECT_CODE, PGP_PKT_PUBLIC_SUBKEY, + "User Attribute Packet", + "Sym. Encrypted and Integrity Protected Data Packet", + "Modification Detection Code Packet" +); +ENUM_END(pgp_packet_tag_names, PGP_PKT_MOD_DETECT_CODE); + + +ENUM_BEGIN(pgp_pubkey_alg_names, PGP_PUBKEY_ALG_RSA, PGP_PUBKEY_ALG_RSA_SIGN_ONLY, + "RSA", + "RSA_ENC_ONLY", + "RSA_SIGN_ONLY" +); +ENUM_NEXT(pgp_pubkey_alg_names, PGP_PUBKEY_ALG_ELGAMAL_ENC_ONLY, PGP_PUBKEY_ALG_DIFFIE_HELLMAN, PGP_PUBKEY_ALG_RSA_SIGN_ONLY, + "ELGAMAL_ENC_ONLY", + "DSA", + "ECC", + "ECDSA", + "ELGAMAL", + "DIFFIE_HELLMAN" +); +ENUM_END(pgp_pubkey_alg_names, PGP_PUBKEY_ALG_DIFFIE_HELLMAN); + + +ENUM(pgp_sym_alg_names, PGP_SYM_ALG_PLAIN, PGP_SYM_ALG_TWOFISH, + "PLAINTEXT", + "IDEA", + "3DES", + "CAST5", + "BLOWFISH", + "SAFER", + "DES", + "AES_128", + "AES_192", + "AES_256", + "TWOFISH" +); + +/* + * Defined in header. + */ +size_t pgp_length(chunk_t *blob, size_t len) +{ + size_t size = 0; + + if (len > blob->len) + { + return PGP_INVALID_LENGTH; + } + blob->len -= len; + + while (len-- > 0) + { + size = 256*size + *blob->ptr++; + } + return size; +} + diff --git a/src/libstrongswan/pgp/pgp.h b/src/libstrongswan/pgp/pgp.h new file mode 100644 index 000000000..677c5b1cc --- /dev/null +++ b/src/libstrongswan/pgp/pgp.h @@ -0,0 +1,115 @@ +/* + * Copyright (C) 2002-2009 Andreas Steffen + * + * Hochschule fuer Technik Rapperswil + * + * 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. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * 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. + */ + +/** + * @defgroup pgpi pgp + * @{ @ingroup pgp + */ + +#ifndef PGP_H_ +#define PGP_H_ + +typedef enum pgp_packet_tag_t pgp_packet_tag_t; +typedef enum pgp_pubkey_alg_t pgp_pubkey_alg_t; +typedef enum pgp_sym_alg_t pgp_sym_alg_t; + +#include <chunk.h> +#include <enum.h> + +/** + * OpenPGP packet tags as defined in section 4.3 of RFC 4880 + */ +enum pgp_packet_tag_t { + PGP_PKT_RESERVED = 0, + PGP_PKT_PUBKEY_ENC_SESSION_KEY = 1, + PGP_PKT_SIGNATURE = 2, + PGP_PKT_SYMKEY_ENC_SESSION_KEY = 3, + PGP_PKT_ONE_PASS_SIGNATURE_PKT = 4, + PGP_PKT_SECRET_KEY = 5, + PGP_PKT_PUBLIC_KEY = 6, + PGP_PKT_SECRET_SUBKEY = 7, + PGP_PKT_COMPRESSED_DATA = 8, + PGP_PKT_SYMKEY_ENC_DATA = 9, + PGP_PKT_MARKER = 10, + PGP_PKT_LITERAL_DATA = 11, + PGP_PKT_TRUST = 12, + PGP_PKT_USER_ID = 13, + PGP_PKT_PUBLIC_SUBKEY = 14, + PGP_PKT_USER_ATTRIBUTE = 17, + PGP_PKT_SYM_ENC_INT_PROT_DATA = 18, + PGP_PKT_MOD_DETECT_CODE = 19 +}; + +/** + * Enum names for pgp_packet_tag_t + */ +extern enum_name_t *pgp_packet_tag_names; + +/** + * OpenPGP public key algorithms as defined in section 9.1 of RFC 4880 + */ +enum pgp_pubkey_alg_t { + PGP_PUBKEY_ALG_RSA = 1, + PGP_PUBKEY_ALG_RSA_ENC_ONLY = 2, + PGP_PUBKEY_ALG_RSA_SIGN_ONLY = 3, + PGP_PUBKEY_ALG_ELGAMAL_ENC_ONLY = 16, + PGP_PUBKEY_ALG_DSA = 17, + PGP_PUBKEY_ALG_ECC = 18, + PGP_PUBKEY_ALG_ECDSA = 19, + PGP_PUBKEY_ALG_ELGAMAL = 20, + PGP_PUBKEY_ALG_DIFFIE_HELLMAN = 21, +}; + +/** + * Enum names for pgp_pubkey_alg_t + */ +extern enum_name_t *pgp_pubkey_alg_names; + +/** + * OpenPGP symmetric key algorithms as defined in section 9.2 of RFC 4880 + */ +enum pgp_sym_alg_t { + PGP_SYM_ALG_PLAIN = 0, + PGP_SYM_ALG_IDEA = 1, + PGP_SYM_ALG_3DES = 2, + PGP_SYM_ALG_CAST5 = 3, + PGP_SYM_ALG_BLOWFISH = 4, + PGP_SYM_ALG_SAFER = 5, + PGP_SYM_ALG_DES = 6, + PGP_SYM_ALG_AES_128 = 7, + PGP_SYM_ALG_AES_192 = 8, + PGP_SYM_ALG_AES_256 = 9, + PGP_SYM_ALG_TWOFISH = 10 +}; + +/** + * Enum names for pgp_sym_alg_t + */ +extern enum_name_t *pgp_sym_alg_names; + +#define PGP_INVALID_LENGTH 0xffffffff + +/** + * Returns the length of an OpenPGP (RFC 4880) packet + * The blob pointer is advanced past the length field + * + * @param blob pointer to an OpenPGP blob + * @param len size of the length field + * @return length of the next OpenPGP packet + */ +size_t pgp_length(chunk_t *blob, size_t len); + +#endif /** PGP_H_ @}*/ |