Include dependency graph for update_crypto.c:

Macros
#define	packet_type(c) ( ( c & 0x3c ) >> 2 ) /* 0x3C = 00111100 */

#define	packet_header_len(c) ( ( c & 0x03 ) + 1 ) /* number of bytes in a packet header */

#define	READ_MPI(d, bits)

#define	CRC24_INIT 0xB704CEL

#define	CRC24_POLY 0x1864CFBL

#define	PUBLIC_KEY_FOUND 0x01

#define	USER_ID_FOUND 0x02

#define	SIGNATURE_FOUND 0X04

Functions
static uint32_t	scalar_number (const uint8_t *p, int header_len)

static uint32_t	mpi_len (const uint8_t *mpi)

static size_t	read_mpi (uint8_t dst, const uint8_t buf, size_t buflen, size_t bits)

static int	parse_public_key_packet (public_key_packet_t p_key, const uint8_t p_buf, size_t i_packet_len)

static size_t	parse_signature_v3_packet (signature_packet_t p_sig, const uint8_t p_buf, size_t i_sig_len)

static size_t	parse_signature_v4_packet (signature_packet_t p_sig, const uint8_t p_buf, size_t i_sig_len)

static int	parse_signature_packet (signature_packet_t p_sig, const uint8_t p_buf, size_t i_packet_len)

static long	crc_octets (uint8_t *octets, size_t len)

static int	pgp_unarmor (const char p_ibuf, size_t i_ibuf_len, uint8_t p_obuf, size_t i_obuf_len)

static int	rsa_pkcs1_encode_sig (gcry_mpi_t r_result, size_t size, const uint8_t hash, int algo)

static int	verify_signature_rsa (signature_packet_t sign, public_key_packet_t p_key, uint8_t *p_hash)

static int	verify_signature_dsa (signature_packet_t sign, public_key_packet_t p_key, uint8_t *p_hash)

int	verify_signature (signature_packet_t sign, public_key_packet_t p_key, uint8_t *p_hash)

int	parse_public_key (const uint8_t p_key_data, size_t i_key_len, public_key_t p_key, const uint8_t *p_sig_issuer)

static int	hash_from_binary_file (const char *psz_file, gcry_md_hd_t hd)

static uint8_t *	hash_finish (gcry_md_hd_t hd, signature_packet_t *p_sig)

uint8_t *	hash_from_text (const char psz_string, signature_packet_t p_sig)

uint8_t *	hash_from_file (const char psz_file, signature_packet_t p_sig)

uint8_t *	hash_from_public_key (public_key_t *p_pkey)

public_key_t *	download_key (vlc_object_t p_this, const uint8_t p_longid, const uint8_t *p_signature_issuer)

int	download_signature (vlc_object_t p_this, signature_packet_t p_sig, const char *psz_url)

Detailed Description

This file contains functions related to OpenPGP in VLC update management

Macro Definition Documentation

◆ CRC24_INIT

#define CRC24_INIT 0xB704CEL

◆ CRC24_POLY

#define CRC24_POLY 0x1864CFBL

◆ packet_header_len

#define packet_header_len ( c ) ( ( c & 0x03 ) + 1 ) /* number of bytes in a packet header */

◆ packet_type

#define packet_type ( c ) ( ( c & 0x3c ) >> 2 ) /* 0x3C = 00111100 */

◆ PUBLIC_KEY_FOUND

#define PUBLIC_KEY_FOUND 0x01

◆ READ_MPI

#define READ_MPI	(	d,
		bits
	)

Value:

do { \
    size_t n = read_mpi(d, p_buf, i_packet_len - i_read, bits); \
    if (!n) goto error; \
    p_buf += n; \
    i_read += n; \
} while(0)

◆ SIGNATURE_FOUND

#define SIGNATURE_FOUND 0X04

◆ USER_ID_FOUND

#define USER_ID_FOUND 0x02

Function Documentation

◆ crc_octets()

static long crc_octets	(	uint8_t *	octets,
		size_t	len
	)

static

References CRC24_INIT, and CRC24_POLY.

Referenced by pgp_unarmor().

◆ download_key()

public_key_t* download_key	(	vlc_object_t *	p_this,
		const uint8_t *	p_longid,
		const uint8_t *	p_signature_issuer
	)

< No error

References asprintf(), public_key_t::longid, msg_Dbg, parse_public_key(), update_release_t::psz_url, vlc_stream_Delete(), vlc_stream_GetSize(), vlc_stream_NewURL, vlc_stream_Read(), and VLC_SUCCESS.

Referenced by GetUpdateFile().

◆ download_signature()

int download_signature	(	vlc_object_t *	p_this,
		signature_packet_t *	p_sig,
		const char *	psz_url
	)

< Not enough memory

< Unspecified error

< Not enough memory

< Unspecified error

< No error

< Unspecified error

< No error

References BINARY_SIGNATURE, msg_Dbg, packet_header_len, packet_type, parse_signature_packet(), pgp_unarmor(), update_release_t::psz_url, scalar_number(), SIGNATURE_PACKET, signature_packet_t::specific, TEXT_SIGNATURE, signature_packet_t::type, signature_packet_t::v4, signature_packet_t::version, VLC_EGENERIC, VLC_ENOMEM, vlc_stream_Delete(), vlc_stream_GetSize(), vlc_stream_NewURL, vlc_stream_Read(), and VLC_SUCCESS.

Referenced by GetUpdateFile().

◆ hash_finish()

static uint8_t* hash_finish	(	gcry_md_hd_t	hd,
		signature_packet_t *	p_sig
	)

static

References signature_packet_t::digest_algo, signature_packet_t::public_key_algo, scalar_number(), signature_packet_t::specific, signature_packet_t::type, signature_packet_t::v3, signature_packet_t::v4, and signature_packet_t::version.

Referenced by hash_from_file(), hash_from_public_key(), and hash_from_text().

◆ hash_from_binary_file()

static int hash_from_binary_file	(	const char *	psz_file,
		gcry_md_hd_t	hd
	)

static

References vlc_fopen().

Referenced by hash_from_file().

◆ hash_from_file()

uint8_t* hash_from_file	(	const char *	psz_file,
		signature_packet_t *	p_sig
	)

References signature_packet_t::digest_algo, hash_finish(), and hash_from_binary_file().

◆ hash_from_public_key()

uint8_t* hash_from_public_key ( public_key_t * p_pkey )

References public_key_packet_t::algo, signature_packet_t::digest_algo, public_key_packet_t::dsa, GENERIC_KEY_SIGNATURE, hash_finish(), signature_packet_t::hash_verification, public_key_t::key, mpi_len(), POSITIVE_KEY_SIGNATURE, public_key_t::psz_username, public_key_packet_t::rsa, public_key_packet_t::sig, public_key_t::sig, public_key_packet_t::timestamp, signature_packet_t::type, public_key_packet_t::version, and signature_packet_t::version.

Referenced by GetUpdateFile().

◆ hash_from_text()

uint8_t* hash_from_text	(	const char *	psz_string,
		signature_packet_t *	p_sig
	)

References signature_packet_t::digest_algo, hash_finish(), TEXT_SIGNATURE, and signature_packet_t::type.

Referenced by GetUpdateFile().

◆ mpi_len()

static uint32_t mpi_len ( const uint8_t * mpi )

static

Referenced by hash_from_public_key(), verify_signature_dsa(), and verify_signature_rsa().

◆ parse_public_key()

int parse_public_key	(	const uint8_t *	p_key_data,
		size_t	i_key_len,
		public_key_t *	p_key,
		const uint8_t *	p_sig_issuer
	)

< Not enough memory

< No error

< Unspecified error

< No error

< Unspecified error

References i_type, signature_packet_t::issuer_longid, public_key_t::key, packet_header_len, packet_type, parse_public_key_packet(), parse_signature_packet(), pgp_unarmor(), public_key_t::psz_username, PUBLIC_KEY_FOUND, PUBLIC_KEY_PACKET, scalar_number(), public_key_t::sig, SIGNATURE_FOUND, SIGNATURE_PACKET, signature_packet_t::specific, USER_ID_FOUND, USER_ID_PACKET, signature_packet_t::v4, signature_packet_t::version, VLC_EGENERIC, VLC_ENOMEM, and VLC_SUCCESS.

Referenced by download_key(), and GetUpdateFile().

◆ parse_public_key_packet()

static int parse_public_key_packet	(	public_key_packet_t *	p_key,
		const uint8_t *	p_buf,
		size_t	i_packet_len
	)

static

< Unspecified error

< No error

< Unspecified error

References public_key_packet_t::algo, public_key_packet_t::dsa, READ_MPI, public_key_packet_t::rsa, public_key_packet_t::sig, public_key_packet_t::timestamp, public_key_packet_t::version, VLC_EGENERIC, and VLC_SUCCESS.

Referenced by parse_public_key().

◆ parse_signature_packet()

static int parse_signature_packet	(	signature_packet_t *	p_sig,
		const uint8_t *	p_buf,
		size_t	i_packet_len
	)

static

< Unspecified error

< No error

< Unspecified error

Referenced by download_signature(), and parse_public_key().

◆ parse_signature_v3_packet()

static size_t parse_signature_v3_packet	(	signature_packet_t *	p_sig,
		const uint8_t *	p_buf,
		size_t	i_sig_len
	)

static

◆ parse_signature_v4_packet()

static size_t parse_signature_v4_packet	(	signature_packet_t *	p_sig,
		const uint8_t *	p_buf,
		size_t	i_sig_len
	)

static

References signature_packet_t::digest_algo, signature_packet_t::hash_verification, signature_packet_t::issuer_longid, ISSUER_SUBPACKET, p, signature_packet_t::public_key_algo, scalar_number(), signature_packet_t::specific, signature_packet_t::type, U32_AT(), and signature_packet_t::v4.

◆ pgp_unarmor()

static int pgp_unarmor	(	const char *	p_ibuf,
		size_t	i_ibuf_len,
		uint8_t *	p_obuf,
		size_t	i_obuf_len
	)

static

References crc_octets(), and vlc_b64_decode_binary_to_buffer().

Referenced by download_signature(), and parse_public_key().

◆ read_mpi()

static size_t read_mpi	(	uint8_t *	dst,
		const uint8_t *	buf,
		size_t	buflen,
		size_t	bits
	)

static

◆ rsa_pkcs1_encode_sig()

static int rsa_pkcs1_encode_sig	(	gcry_mpi_t *	r_result,
		size_t	size,
		const uint8_t *	hash,
		int	algo
	)

static

< Unspecified error

< No error

Referenced by verify_signature_rsa().

◆ scalar_number()

static uint32_t scalar_number	(	const uint8_t *	p,
		int	header_len
	)

inlinestatic

References p.

Referenced by download_signature(), hash_finish(), parse_public_key(), and parse_signature_v4_packet().

◆ verify_signature()

int verify_signature	(	signature_packet_t *	sign,
		public_key_packet_t *	p_key,
		uint8_t *	p_hash
	)

< Unspecified error

References signature_packet_t::public_key_algo, verify_signature_dsa(), verify_signature_rsa(), and VLC_EGENERIC.

Referenced by GetUpdateFile().

◆ verify_signature_dsa()

static int verify_signature_dsa	(	signature_packet_t *	sign,
		public_key_packet_t *	p_key,
		uint8_t *	p_hash
	)

static

< Unspecified error

< No error

References signature_packet_t::algo_specific, signature_packet_t::digest_algo, public_key_packet_t::dsa, signature_packet_t::dsa, mpi_len(), p, public_key_packet_t::sig, VLC_EGENERIC, and VLC_SUCCESS.

Referenced by verify_signature().

◆ verify_signature_rsa()

static int verify_signature_rsa	(	signature_packet_t *	sign,
		public_key_packet_t *	p_key,
		uint8_t *	p_hash
	)

static

< Unspecified error

< No error

References signature_packet_t::algo_specific, signature_packet_t::digest_algo, mpi_len(), public_key_packet_t::rsa, signature_packet_t::rsa, rsa_pkcs1_encode_sig(), public_key_packet_t::sig, VLC_EGENERIC, and VLC_SUCCESS.

Referenced by verify_signature().

Macros

Functions

Detailed Description

Macro Definition Documentation

◆ CRC24_INIT

◆ CRC24_POLY

◆ packet_header_len

◆ packet_type

◆ PUBLIC_KEY_FOUND

◆ READ_MPI

◆ SIGNATURE_FOUND

◆ USER_ID_FOUND

Function Documentation

◆ crc_octets()

◆ download_key()

◆ download_signature()

◆ hash_finish()

◆ hash_from_binary_file()

◆ hash_from_file()

◆ hash_from_public_key()

◆ hash_from_text()

◆ mpi_len()

◆ parse_public_key()

◆ parse_public_key_packet()

◆ parse_signature_packet()

◆ parse_signature_v3_packet()

◆ parse_signature_v4_packet()

◆ pgp_unarmor()

◆ read_mpi()

◆ rsa_pkcs1_encode_sig()

◆ scalar_number()

◆ verify_signature()

◆ verify_signature_dsa()

◆ verify_signature_rsa()