Annotation of pgp/src/pgp.h, revision 1.1

1.1     ! root        1: /*
        !             2:        Pretty Good(tm) Privacy - RSA public key cryptography for the masses
        !             3:        Written by Philip Zimmermann, Phil's Pretty Good(tm) Software.
        !             4:        Version 1.0 - 5 Jun 91, last revised 6 Jul 91 by PRZ
        !             5: 
        !             6:        This file defines the various formats, filenames, and general control
        !             7:        methods used by PGP, as well as a few global switches which control
        !             8:        the functioning of the driver code.
        !             9: 
        !            10: */
        !            11: 
        !            12: #include "usuals.h"
        !            13: #define KEYFRAGSIZE 8  /* # of bytes in key ID modulus fragment */
        !            14: #define SIZEOF_TIMESTAMP 4 /* 32-bit timestamp */
        !            15: 
        !            16: /* The maximum length of the file path for this system.  Varies on UNIX
        !            17:    systems */
        !            18: 
        !            19: #ifndef        MAX_PATH
        !            20: #ifdef MSDOS
        !            21: #define MAX_PATH       64
        !            22: #else
        !            23: #define MAX_PATH       256
        !            24: #endif
        !            25: #endif
        !            26: 
        !            27: #ifdef ATARI
        !            28: #define sizeof(x) (int)sizeof(x)
        !            29: #define fread(a,b,c,d) ((int)fread(a,b,c,d))
        !            30: #endif
        !            31: 
        !            32: /*
        !            33: **********************************************************************
        !            34: */
        !            35: 
        !            36: /* Cipher Type Byte (CTB) definitions follow...*/
        !            37: #define CTB_DESIGNATOR 0x80
        !            38: #define is_ctb(c) (((c) & CTB_DESIGNATOR)==CTB_DESIGNATOR)
        !            39: #define CTB_TYPE_MASK 0x7c
        !            40: #define CTB_LLEN_MASK 0x03
        !            41: 
        !            42: /* "length of length" field of packet, in bytes (1, 2, 4, 8 bytes): */
        !            43: #define ctb_llength(ctb) ((int) 1 << (int) ((ctb) & CTB_LLEN_MASK))
        !            44: 
        !            45: #define is_ctb_type(ctb,type) (((ctb) & CTB_TYPE_MASK)==(4*type))
        !            46: #define CTB_BYTE(type,llen) (CTB_DESIGNATOR + (4*type) + llen)
        !            47: 
        !            48: #define CTB_PKE_TYPE 1                 /* packet encrypted with RSA public key */
        !            49: #define CTB_SKE_TYPE 2                 /* packet signed with RSA secret key */
        !            50: #define CTB_MD_TYPE 3                  /* message digest packet */
        !            51: #define CTB_CERT_SECKEY_TYPE 5  /* secret key certificate */
        !            52: #define CTB_CERT_PUBKEY_TYPE 6  /* public key certificate */
        !            53: #define CTB_COMPRESSED_TYPE 8  /* compressed data packet */
        !            54: #define CTB_CKE_TYPE 9                 /* conventional-key-encrypted data */
        !            55: #define        CTB_LITERAL_TYPE 10             /* raw data with filename and mode */
        !            56: #define CTB_KEYCTRL_TYPE 12            /* key control packet */
        !            57: #define CTB_USERID_TYPE 13             /* user id packet */
        !            58: #define CTB_COMMENT_TYPE 14            /* comment packet */
        !            59: 
        !            60: /* Unimplemented CTB packet types follow... */
        !            61: /* #define CTB_EXTENDED_TYPE 15 */ /* 2-byte CTB, 256 extra CTB types */
        !            62: 
        !            63: #define CTB_PKE CTB_BYTE(CTB_PKE_TYPE,1)
        !            64:        /* CTB_PKE len16 keyID mpi(RSA(CONKEYPKT)) */
        !            65:        /*        1              2       SIZE  countbytes()+2 */
        !            66: #define CTB_SKE CTB_BYTE(CTB_SKE_TYPE,1)
        !            67:        /* CTB_SKE len16 keyID mpi(RSA(MDPKT)) */
        !            68:        /*        1              2       SIZE  countbytes()+2 */
        !            69: #define CTB_MD CTB_BYTE(CTB_MD_TYPE,0)
        !            70:        /* CTB_MD len8 algorithm MD timestamp */
        !            71: #define CTB_CERT_SECKEY CTB_BYTE(CTB_CERT_SECKEY_TYPE,1)
        !            72:        /* CTB_CERT_SECKEY len16 timestamp userID mpi(n) mpi(e) mpi(d) mpi(p) mpi(q) mpi(u) crc16 */
        !            73: #define CTB_CERT_PUBKEY CTB_BYTE(CTB_CERT_PUBKEY_TYPE,1)
        !            74:        /* CTB_CERT_PUBKEY len16 timestamp userID mpi(n) mpi(e) crc16 */
        !            75: 
        !            76: #define CTB_KEYCTRL CTB_BYTE(CTB_KEYCTRL_TYPE,0)
        !            77: #define        CTB_USERID      CTB_BYTE(CTB_USERID_TYPE,0)
        !            78: 
        !            79: #define CTB_CKE CTB_BYTE(CTB_CKE_TYPE,3)
        !            80:        /*      CTB_CKE ciphertext */
        !            81: 
        !            82: #define CTB_LITERAL CTB_BYTE(CTB_LITERAL_TYPE,3)
        !            83:        /*      CTB_LITERAL data */
        !            84: 
        !            85: #define CTB_COMPRESSED CTB_BYTE(CTB_COMPRESSED_TYPE,3)
        !            86:        /*      CTB_COMPRESSED compressedtext */
        !            87: 
        !            88: /*     Public key encryption algorithm selector bytes. */
        !            89: #define RSA_ALGORITHM_BYTE     1       /*      use RSA */
        !            90: 
        !            91: /*     Conventional encryption algorithm selector bytes. */
        !            92: #define IDEA_ALGORITHM_BYTE    1       /*      use the IDEA cipher */
        !            93: 
        !            94: /*     Message digest algorithm selector bytes. */
        !            95: #define MD5_ALGORITHM_BYTE 1   /* MD5 message digest algorithm */
        !            96: 
        !            97: /*     Data compression algorithm selector bytes. */
        !            98: #define ZIP2_ALGORITHM_BYTE  1 /* Zip-based deflate compression algorithm */
        !            99: 
        !           100: /* Signature classification bytes. */
        !           101: #define SB_SIGNATURE_BYTE      0x00    /* Signature of a binary msg or doc */
        !           102: #define SM_SIGNATURE_BYTE      0x01    /* Signature of canonical msg or doc */
        !           103: #define        K0_SIGNATURE_BYTE       0x10    /* Key certification, generic */
        !           104: #define        K1_SIGNATURE_BYTE       0x11    /* Key certification, persona */
        !           105: #define        K2_SIGNATURE_BYTE       0x12    /* Key certification, casual ID */
        !           106: #define        K3_SIGNATURE_BYTE       0x13    /* Key certification, positive ID */
        !           107: #define KC_SIGNATURE_BYTE      0x20    /* Key compromise */
        !           108: #define KR_SIGNATURE_BYTE      0x30    /* Key revocation */
        !           109: #define        TS_SIGNATURE_BYTE       0x40    /* Timestamp someone else's signature */
        !           110: 
        !           111: /* Public key encrypted data classification bytes. */
        !           112: #define MD_ENCRYPTED_BYTE      1       /* Message digest is encrypted */
        !           113: #define CK_ENCRYPTED_BYTE      2       /* Conventional key is encrypted */
        !           114: 
        !           115: /* Version byte for data structures created by this version of PGP */
        !           116: #define        VERSION_BYTE            2       /* PGP2 */
        !           117: 
        !           118: /* Values for trust bits in keycntrl packet after key packet */
        !           119: #define        KC_OWNERTRUST_MASK              0x07    /* Trust bits for key owner */
        !           120: #define        KC_OWNERTRUST_UNDEFINED 0x00
        !           121: #define        KC_OWNERTRUST_UNKNOWN   0x01
        !           122: #define        KC_OWNERTRUST_NEVER             0x02
        !           123: /* 2 levels reserved */
        !           124: #define        KC_OWNERTRUST_USUALLY   0x05
        !           125: #define        KC_OWNERTRUST_ALWAYS    0x06
        !           126: #define        KC_OWNERTRUST_ULTIMATE  0x07    /* Only for keys in secret ring */
        !           127: #define        KC_BUCKSTOP                             0x80    /* This key is in secret ring */
        !           128: #define        KC_VISITED                              0x40
        !           129: 
        !           130: /* Values for trust bits in keycntrl packet after userid packet */
        !           131: #define        KC_LEGIT_MASK                   0x03    /* Key legit bits for key */
        !           132: #define        KC_LEGIT_UNKNOWN                0x00
        !           133: #define KC_LEGIT_UNTRUSTED             0x01
        !           134: #define KC_LEGIT_MARGINAL              0x02
        !           135: #define        KC_LEGIT_COMPLETE               0x03
        !           136: #define        KC_WARNONLY                             0x80
        !           137: 
        !           138: /* Values for trust bits in keycntrl packet after signature packet */
        !           139: #define        KC_SIGTRUST_MASK                0x07    /* Trust bits for key owner */
        !           140: #define        KC_SIGTRUST_UNDEFINED   0x00
        !           141: #define        KC_SIGTRUST_UNKNOWN             0x01
        !           142: #define        KC_SIGTRUST_UNTRUSTED   0x02
        !           143: /* 2 levels reserved */
        !           144: #define        KC_SIGTRUST_MARGINAL    0x05
        !           145: #define        KC_SIGTRUST_COMPLETE    0x06
        !           146: #define        KC_SIGTRUST_ULTIMATE    0x07
        !           147: #define        KC_CONTIG                               0x80    /* This sig is on a cert. path */
        !           148: 
        !           149: #define        MAINT_CHECK                             0x01
        !           150: #define        MAINT_VERBOSE                   0x02
        !           151: #define        MAINT_SILENT                    0x04
        !           152: 
        !           153: #define is_secret_key(ctb) is_ctb_type(ctb,CTB_CERT_SECKEY_TYPE)
        !           154: 
        !           155: #define MAX_SIGCERT_LENGTH (1+2 + KEYFRAGSIZE + 2+MAX_BYTE_PRECISION)
        !           156: 
        !           157: #define MAX_KEYCERT_LENGTH (1+2+4+256 + 5*(2+MAX_BYTE_PRECISION))
        !           158: 
        !           159: /* Modes for CTB_LITERAL2 packet */
        !           160: #define        MODE_BINARY     'b'
        !           161: #define        MODE_TEXT       't'
        !           162: 
        !           163: /* Define CANONICAL_TEXT for any system which normally uses CRLF's
        !           164:    for text separators */
        !           165: #ifdef MSDOS
        !           166: #define        CANONICAL_TEXT
        !           167: #endif /* MSDOS */
        !           168: 
        !           169: /* Prototype for the 'more' function, which blorts a file to the screen with
        !           170:    page breaks, intelligent handling of line terminators, truncation of
        !           171:    overly long lines, and zapping of illegal chars.  Implemented in MORE.C */
        !           172: 
        !           173: int more_file(char *fileName);
        !           174: 
        !           175: /* Prototypes for the transport armor routines */
        !           176: 
        !           177: boolean is_armor_file(char *infile);
        !           178: int armor_file(char *infile, char *outfile, char *filename);
        !           179: int de_armor_file(char *infile, char *outfile, boolean *newname);
        !           180: 
        !           181: void exitPGP(int);
        !           182: void user_error();
        !           183: 
        !           184: /* Global filenames and system-wide file extensions... */
        !           185: extern char CTX_EXTENSION[];
        !           186: extern char PGP_EXTENSION[];
        !           187: extern char ASC_EXTENSION[];
        !           188: extern char SIG_EXTENSION[];
        !           189: extern char BAK_EXTENSION[];
        !           190: extern char SCRATCH_KEYRING_FILENAME[]; /* gets modified */
        !           191: extern char CONSOLE_FILENAME[];
        !           192: extern char SCRATCH_KEYRING_PATH[MAX_PATH];
        !           193: extern char rel_version[];
        !           194: extern char rel_date[];
        !           195: 
        !           196: /* These files use the environmental variable PGPPATH as a default path: */
        !           197: extern char PUBLIC_KEYRING_FILENAME[32];
        !           198: extern char SECRET_KEYRING_FILENAME[32];
        !           199: extern char RANDSEED_FILENAME[32];
        !           200: 
        !           201: /* Variables which are global across the driver code */
        !           202: extern boolean filter_mode;
        !           203: extern FILE    *pgpout;        /* FILE structure for routine output */
        !           204: 
        !           205: /* Variables settable by config.pgp and referenced in config.c ... */
        !           206: extern char language[];        /* foreign language prefix code for language.pgp file */
        !           207: extern char charset[];
        !           208: /* my_name is substring of default userid for secret key to make signatures */
        !           209: extern char my_name[];
        !           210: extern char tmpdir[];  /* directory for temp files, usually RAMdisk */
        !           211: extern char floppyring[]; /* for comparing secret keys with backup on floppy */
        !           212: extern char lit_mode;  /* text or binary mode for literal packet */
        !           213: extern boolean emit_radix_64;
        !           214: extern boolean showpass;
        !           215: extern boolean keepctx;
        !           216: extern boolean verbose;        /* display maximum information */
        !           217: extern boolean compress_enabled;       /* attempt compression before encryption */
        !           218: extern long timeshift; /* seconds from GMT timezone */
        !           219: extern int pem_lines;
        !           220: extern int marg_min;   /* number of marginally trusted signatures needed to
        !           221:                                                   make a key fully-legit */
        !           222: extern int compl_min;  /* number of fully trusted signatures needed */
        !           223: extern int max_cert_depth;
        !           224: extern char pager[];   /* file lister command */
        !           225: 
        !           226: extern char trust_lst[8][16];
        !           227: 

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