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- /*
- Pretty Good(tm) Privacy - RSA public key cryptography for the masses
- Written by Philip Zimmermann, Phil's Pretty Good(tm) Software.
- Version 1.0 - 5 Jun 91, last revised 6 Jul 91 by PRZ
-
- This file defines the various formats, filenames, and general control
- methods used by PGP, as well as a few global switches which control
- the functioning of the driver code.
-
- */
-
- #include "usuals.h"
- #include "more.h"
- #include "armor.h"
-
- #define KEYFRAGSIZE 8 /* # of bytes in key ID modulus fragment */
- #define SIZEOF_TIMESTAMP 4 /* 32-bit timestamp */
-
- /* The maximum length of the file path for this system. Varies on UNIX
- systems */
-
- #ifndef MAX_PATH
- #ifdef MSDOS
- #define MAX_PATH 64
- #else
- #define MAX_PATH 256
- #endif
- #endif
-
- #ifdef ATARI
- #define sizeof(x) (int)sizeof(x)
- #define fread(a,b,c,d) ((int)fread(a,b,c,d))
- #endif
-
- /*
- **********************************************************************
- */
-
- /* Cipher Type Byte (CTB) definitions follow...*/
- #define CTB_DESIGNATOR 0x80
- #define is_ctb(c) (((c) & CTB_DESIGNATOR)==CTB_DESIGNATOR)
- #define CTB_TYPE_MASK 0x7c
- #define CTB_LLEN_MASK 0x03
-
- /* "length of length" field of packet, in bytes (1, 2, 4, 8 bytes): */
- #define ctb_llength(ctb) ((int) 1 << (int) ((ctb) & CTB_LLEN_MASK))
-
- #define is_ctb_type(ctb,type) (((ctb) & CTB_TYPE_MASK)==(4*type))
- #define CTB_BYTE(type,llen) (CTB_DESIGNATOR + (4*type) + llen)
-
- #define CTB_PKE_TYPE 1 /* packet encrypted with RSA public key */
- #define CTB_SKE_TYPE 2 /* packet signed with RSA secret key */
- #define CTB_MD_TYPE 3 /* message digest packet */
- #define CTB_CERT_SECKEY_TYPE 5 /* secret key certificate */
- #define CTB_CERT_PUBKEY_TYPE 6 /* public key certificate */
- #define CTB_COMPRESSED_TYPE 8 /* compressed data packet */
- #define CTB_CKE_TYPE 9 /* conventional-key-encrypted data */
- #define CTB_LITERAL_TYPE 10 /* raw data with filename and mode */
- #define CTB_LITERAL2_TYPE 11 /* Fixed literal packet */
- #define CTB_KEYCTRL_TYPE 12 /* key control packet */
- #define CTB_USERID_TYPE 13 /* user id packet */
- #define CTB_COMMENT_TYPE 14 /* comment packet */
-
- /* Unimplemented CTB packet types follow... */
- /* #define CTB_EXTENDED_TYPE 15 */ /* 2-byte CTB, 256 extra CTB types */
-
- #define CTB_PKE CTB_BYTE(CTB_PKE_TYPE,1)
- /* CTB_PKE len16 keyID mpi(RSA(CONKEYPKT)) */
- /* 1 2 SIZE countbytes()+2 */
- #define CTB_SKE CTB_BYTE(CTB_SKE_TYPE,1)
- /* CTB_SKE len16 keyID mpi(RSA(MDPKT)) */
- /* 1 2 SIZE countbytes()+2 */
- #define CTB_MD CTB_BYTE(CTB_MD_TYPE,0)
- /* CTB_MD len8 algorithm MD timestamp */
- #define CTB_CERT_SECKEY CTB_BYTE(CTB_CERT_SECKEY_TYPE,1)
- /* CTB_CERT_SECKEY len16 timestamp userID mpi(n) mpi(e) mpi(d) mpi(p) mpi(q) mpi(u) crc16 */
- #define CTB_CERT_PUBKEY CTB_BYTE(CTB_CERT_PUBKEY_TYPE,1)
- /* CTB_CERT_PUBKEY len16 timestamp userID mpi(n) mpi(e) crc16 */
-
- #define CTB_KEYCTRL CTB_BYTE(CTB_KEYCTRL_TYPE,0)
- #define CTB_USERID CTB_BYTE(CTB_USERID_TYPE,0)
-
- #define CTB_CKE CTB_BYTE(CTB_CKE_TYPE,3)
- /* CTB_CKE ciphertext */
-
- #define CTB_LITERAL CTB_BYTE(CTB_LITERAL_TYPE,3)
- #define CTB_LITERAL2 CTB_BYTE(CTB_LITERAL_TYPE,3)
- /* CTB_LITERAL data */
-
- #define CTB_COMPRESSED CTB_BYTE(CTB_COMPRESSED_TYPE,3)
- /* CTB_COMPRESSED compressedtext */
-
- /* Public key encryption algorithm selector bytes. */
- #define RSA_ALGORITHM_BYTE 1 /* use RSA */
-
- /* Conventional encryption algorithm selector bytes. */
- #define IDEA_ALGORITHM_BYTE 1 /* use the IDEA cipher */
-
- /* Message digest algorithm selector bytes. */
- #define MD5_ALGORITHM_BYTE 1 /* MD5 message digest algorithm */
-
- /* Data compression algorithm selector bytes. */
- #define ZIP2_ALGORITHM_BYTE 1 /* Zip-based deflate compression algorithm */
-
- /* Signature classification bytes. */
- #define SB_SIGNATURE_BYTE 0x00 /* Signature of a binary msg or doc */
- #define SM_SIGNATURE_BYTE 0x01 /* Signature of canonical msg or doc */
- #define K0_SIGNATURE_BYTE 0x10 /* Key certification, generic */
- #define K1_SIGNATURE_BYTE 0x11 /* Key certification, persona */
- #define K2_SIGNATURE_BYTE 0x12 /* Key certification, casual ID */
- #define K3_SIGNATURE_BYTE 0x13 /* Key certification, positive ID */
- #define KC_SIGNATURE_BYTE 0x20 /* Key compromise */
- #define KR_SIGNATURE_BYTE 0x30 /* Key revocation */
- #define TS_SIGNATURE_BYTE 0x40 /* Timestamp someone else's signature */
-
- /* Public key encrypted data classification bytes. */
- #define MD_ENCRYPTED_BYTE 1 /* Message digest is encrypted */
- #define CK_ENCRYPTED_BYTE 2 /* Conventional key is encrypted */
-
- /* Version byte for data structures created by this version of PGP */
- #define VERSION_BYTE 2 /* PGP2 */
-
- /* Values for trust bits in keycntrl packet after key packet */
- #define KC_OWNERTRUST_MASK 0x07 /* Trust bits for key owner */
- #define KC_OWNERTRUST_UNDEFINED 0x00
- #define KC_OWNERTRUST_UNKNOWN 0x01
- #define KC_OWNERTRUST_NEVER 0x02
- /* 2 levels reserved */
- #define KC_OWNERTRUST_USUALLY 0x05
- #define KC_OWNERTRUST_ALWAYS 0x06
- #define KC_OWNERTRUST_ULTIMATE 0x07 /* Only for keys in secret ring */
- #define KC_BUCKSTOP 0x80 /* This key is in secret ring */
- #define KC_VISITED 0x40
- #define KC_DISABLED 0x20 /* key is disabled */
-
- /* Values for trust bits in keycntrl packet after userid packet */
- #define KC_LEGIT_MASK 0x03 /* Key legit bits for key */
- #define KC_LEGIT_UNKNOWN 0x00
- #define KC_LEGIT_UNTRUSTED 0x01
- #define KC_LEGIT_MARGINAL 0x02
- #define KC_LEGIT_COMPLETE 0x03
- #define KC_WARNONLY 0x80
-
- /* Values for trust bits in keycntrl packet after signature packet */
- #define KC_SIGTRUST_MASK 0x07 /* Trust bits for key owner */
- #define KC_SIGTRUST_UNDEFINED 0x00
- #define KC_SIGTRUST_UNKNOWN 0x01
- #define KC_SIGTRUST_UNTRUSTED 0x02
- /* 2 levels reserved */
- #define KC_SIGTRUST_MARGINAL 0x05
- #define KC_SIGTRUST_COMPLETE 0x06
- #define KC_SIGTRUST_ULTIMATE 0x07
- #define KC_SIG_CHECKED 0x40 /* This sig has been checked */
- #define KC_CONTIG 0x80 /* This sig is on a cert. path */
-
- #define is_secret_key(ctb) is_ctb_type(ctb,CTB_CERT_SECKEY_TYPE)
-
- #define MPILEN (2+MAX_BYTE_PRECISION)
- #define MAX_SIGCERT_LENGTH (1+2+1 +1+7 +KEYFRAGSIZE+2+2+MPILEN)
- #define MAX_KEYCERT_LENGTH (1+2+1+4+2+1 +(2*MPILEN) +1+8 +(4*MPILEN) +2)
-
- /* Modes for CTB_LITERAL2 packet */
- #define MODE_BINARY 'b'
- #define MODE_TEXT 't'
- #define MODE_LOCAL 'l'
-
- /* Define CANONICAL_TEXT for any system which normally uses CRLF's
- for text separators */
- #ifdef MSDOS
- #define CANONICAL_TEXT
- #endif /* MSDOS */
-
- /* Prototype for the 'more' function, which blorts a file to the screen with
- page breaks, intelligent handling of line terminators, truncation of
- overly long lines, and zapping of illegal chars. Implemented in MORE.C */
-
- int more_file(char *fileName);
-
- /* Prototypes for the transport armor routines */
-
- boolean is_armor_file(char *infile, long startline);
- int armor_file(char *infile, char *outfile, char *filename, char *clearname);
- int de_armor_file(char *infile, char *outfile, long *curline);
-
- void user_error(void);
-
- /* Global filenames and system-wide file extensions... */
- extern char PGP_EXTENSION[];
- extern char ASC_EXTENSION[];
- extern char SIG_EXTENSION[];
- extern char BAK_EXTENSION[];
- extern char CONSOLE_FILENAME[];
- extern char rel_version[];
-
- /* These files use the environmental variable PGPPATH as a default path: */
- extern char PUBLIC_KEYRING_FILENAME[32];
- extern char SECRET_KEYRING_FILENAME[32];
- extern char RANDSEED_FILENAME[32];
-
- /* Variables which are global across the driver code */
- extern boolean filter_mode;
- extern boolean moreflag;
- extern FILE *pgpout; /* FILE structure for routine output */
-
- /* Variables settable by config.pgp and referenced in config.c ... */
- extern char language[]; /* foreign language prefix code for language.pgp file */
- extern char charset[];
- /* my_name is substring of default userid for secret key to make signatures */
- extern char my_name[];
- extern char floppyring[]; /* for comparing secret keys with backup on floppy */
- extern char literal_mode; /* text or binary mode for literal packet */
- extern boolean emit_radix_64;
- extern boolean showpass;
- extern boolean keepctx;
- extern boolean verbose; /* display maximum information */
- extern boolean compress_enabled; /* attempt compression before encryption */
- extern boolean clear_signatures;
- extern boolean encrypt_to_self; /* Should I encrypt to myself? */
- extern boolean batchmode; /* for batch processing */
- extern boolean quietmode; /* less verbose */
- extern boolean force_flag; /* overwrite existing file without asking */
- extern boolean pkcs_compat; /* Use PKCS format messages */
- /* Ask for each key separately if it should be added to the keyring */
- extern boolean interactive_add;
- extern long timeshift; /* seconds from GMT timezone */
- extern boolean signature_checked;
- extern int pem_lines;
- extern int marg_min; /* number of marginally trusted signatures needed to
- make a key fully-legit */
- extern int compl_min; /* number of fully trusted signatures needed */
- extern int max_cert_depth;
- extern char pager[]; /* file lister command */
-
- /* These lists store hashed passwords for future use. */
- /* passwds are passwords of as-yet-unknown purpose; keypasswds
- are passwords used to decrypt keys. */
- struct hashedpw {
- struct hashedpw *next;
- byte hash[16];
- };
- extern struct hashedpw *keypasswds, *passwds;
-
- extern boolean strip_spaces;
-
- #ifdef VMS
- /*
- * FDL Support Prototypes, Currently Used Only In SYSTEM.C and CRYPTO.C
- */
-
- int fdl_generate(char *in_file, char **fdl, short *len);
- VOID *fdl_create( char *fdl, short len, char *outfile, char *preserved_name);
- int fdl_copyfile2bin(FILE *f, VOID *rab, word32 longcount);
- void fdl_close( VOID *rab);
- #endif /* VMS */
-
- extern int compressSignature(byte *header);
-