Annotation of embedaddon/strongswan/src/libstrongswan/plugins/ntru/ntru_param_set.h, revision 1.1
1.1 ! misho 1: /*
! 2: * Copyright (C) 2014 Andreas Steffen
! 3: * HSR Hochschule fuer Technik Rapperswil
! 4: *
! 5: * Copyright (C) 2009-2013 Security Innovation
! 6: *
! 7: * This program is free software; you can redistribute it and/or modify it
! 8: * under the terms of the GNU General Public License as published by the
! 9: * Free Software Foundation; either version 2 of the License, or (at your
! 10: * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
! 11: *
! 12: * This program is distributed in the hope that it will be useful, but
! 13: * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
! 14: * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
! 15: * for more details.
! 16: */
! 17:
! 18: /**
! 19: * @defgroup ntru_param_set ntru_param_set
! 20: * @{ @ingroup ntru_p
! 21: */
! 22:
! 23: #ifndef NTRU_PARAM_SET_H_
! 24: #define NTRU_PARAM_SET_H_
! 25:
! 26: typedef enum ntru_param_set_id_t ntru_param_set_id_t;
! 27: typedef struct ntru_param_set_t ntru_param_set_t;
! 28:
! 29: #include <library.h>
! 30:
! 31: /**
! 32: * Encoding types for NTRU encryption public/private key blobs
! 33: */
! 34: #define NTRU_PUBKEY_TAG 0x01
! 35: #define NTRU_PRIVKEY_DEFAULT_TAG 0x02
! 36: #define NTRU_PRIVKEY_TRITS_TAG 0xfe
! 37: #define NTRU_PRIVKEY_INDICES_TAG 0xff
! 38:
! 39: /**
! 40: * Size in octets of the OID designating the NTRU encryption parameter set
! 41: */
! 42: #define NTRU_OID_LEN 3
! 43:
! 44: /**
! 45: * Packing types for NTRU encryption public/private keys
! 46: */
! 47: #define NTRU_KEY_PACKED_COEFFICIENTS 0x01
! 48: #define NTRU_KEY_PACKED_INDICES 0x02
! 49: #define NTRU_KEY_PACKED_TRITS 0x03
! 50:
! 51: /**
! 52: * NTRU encryption parameter set ID list
! 53: */
! 54: enum ntru_param_set_id_t {
! 55: /* X9.98/IEEE 1363.1 parameter sets for best bandwidth (smallest size) */
! 56: NTRU_EES401EP1,
! 57: NTRU_EES449EP1,
! 58: NTRU_EES677EP1,
! 59: NTRU_EES1087EP2,
! 60: /* X9.98/IEEE 1363.1 parameter sets balancing speed and bandwidth */
! 61: NTRU_EES541EP1,
! 62: NTRU_EES613EP1,
! 63: NTRU_EES887EP1,
! 64: NTRU_EES1171EP1,
! 65: /* X9.98/IEEE 1363.1 parameter sets for best speed */
! 66: NTRU_EES659EP1,
! 67: NTRU_EES761EP1,
! 68: NTRU_EES1087EP1,
! 69: NTRU_EES1499EP1,
! 70: /* Best bandwidth and speed, no X9.98 compatibility */
! 71: NTRU_EES401EP2,
! 72: NTRU_EES439EP1,
! 73: NTRU_EES593EP1,
! 74: NTRU_EES743EP1,
! 75: };
! 76:
! 77: extern enum_name_t *ntru_param_set_id_names;
! 78:
! 79: /**
! 80: * NTRU encryption parameter set definitions
! 81: */
! 82: struct ntru_param_set_t {
! 83:
! 84: /**
! 85: * NTRU parameter set ID
! 86: */
! 87: const ntru_param_set_id_t id;
! 88:
! 89: /**
! 90: * pointer to OID
! 91: */
! 92: const uint8_t oid[NTRU_OID_LEN];
! 93:
! 94: /**
! 95: * parameter-set DER id
! 96: */
! 97: const uint8_t der_id;
! 98:
! 99: /**
! 100: * no. of bits in N (i.e. in an index
! 101: */
! 102: const uint8_t N_bits;
! 103:
! 104: /**
! 105: * ring dimension
! 106: */
! 107: const uint16_t N;
! 108:
! 109: /**
! 110: * no. of octets of security strength
! 111: */
! 112: const uint16_t sec_strength_len;
! 113:
! 114: /**
! 115: * big modulus
! 116: */
! 117: const uint16_t q;
! 118:
! 119: /**
! 120: * no. of bits in q (i.e. in a coefficient)
! 121: */
! 122: const uint8_t q_bits;
! 123:
! 124: /**
! 125: * if product form used
! 126: */
! 127: const bool is_product_form;
! 128:
! 129: /**
! 130: * no. of +1 or -1 coefficients in ring elements F, r
! 131: */
! 132: const uint32_t dF_r;
! 133:
! 134: /**
! 135: * no. - 1 of +1 coefficients or no. of -1 coefficients in ring element g
! 136: */
! 137: const uint16_t dg;
! 138:
! 139: /**
! 140: * max no. of plaintext octets
! 141: */
! 142: const uint16_t m_len_max;
! 143:
! 144: /**
! 145: * min. message representative weight
! 146: */
! 147: const uint16_t min_msg_rep_wt;
! 148:
! 149: /**
! 150: * no. bits in candidate for deriving an index
! 151: */
! 152: const uint8_t c_bits;
! 153:
! 154: /**
! 155: * no. of octets to hold mLenOctets
! 156: */
! 157: const uint8_t m_len_len;
! 158: };
! 159:
! 160: /**
! 161: * Get NTRU encryption parameter set by NTRU parameter set ID
! 162: *
! 163: * @param id NTRU parameter set ID
! 164: * @return NTRU parameter set
! 165: */
! 166: const ntru_param_set_t* ntru_param_set_get_by_id(ntru_param_set_id_t id);
! 167:
! 168: /**
! 169: * Get NTRU encryption parameter set by NTRU parameter set OID
! 170: *
! 171: * @param oid NTRU parameter set OID
! 172: * @return NTRU parameter set
! 173: */
! 174: const ntru_param_set_t* ntru_param_set_get_by_oid(uint8_t const *oid);
! 175:
! 176: #endif /** NTRU_PARAM_SET_H_ @}*/
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