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#ifndef _IPXE_X509_H
#define _IPXE_X509_H
/** @file
*
* X.509 certificates
*
*/
FILE_LICENCE ( GPL2_OR_LATER );
#include <stdint.h>
#include <stddef.h>
#include <ipxe/asn1.h>
/** ASN.1 OID for joint-iso-itu-t(2) ds(5) attributeType(4) */
#define ASN1_OID_ATTRIBUTE_TYPE \
ASN1_OID_DIRECTORY_SERVICES, ASN1_OID_SINGLE ( 4 )
/** ASN.1 OID for joint-iso-itu-t(2) ds(5) attributeType(4) commonName(3) */
#define ASN1_OID_COMMON_NAME ASN1_OID_ATTRIBUTE_TYPE, ASN1_OID_SINGLE ( 3 )
/** ASN.1 OID for id-ce */
#define ASN1_OID_CE ASN1_OID_DIRECTORY_SERVICES, ASN1_OID_SINGLE ( 29 )
/** ASN.1 OID for id-ce-keyUsage */
#define ASN1_OID_KEYUSAGE ASN1_OID_CE, ASN1_OID_SINGLE ( 15 )
/** ASN.1 OID for id-ce-basicConstraints */
#define ASN1_OID_BASICCONSTRAINTS ASN1_OID_CE, ASN1_OID_SINGLE ( 19 )
/** An X.509 algorithm */
struct x509_algorithm {
/** Name */
const char *name;
/** Object identifier */
struct asn1_cursor oid;
/** Public-key algorithm */
struct pubkey_algorithm *pubkey;
/** Digest algorithm (if applicable) */
struct digest_algorithm *digest;
};
/**
* Test if X.509 algorithm is a signature algorithm
*
* @v algorithm Algorithm
* @ret is_signature Algorithm is a signature algorithm
*/
static inline __attribute__ (( always_inline )) int
x509_is_signature_algorithm ( struct x509_algorithm *algorithm ) {
return ( algorithm->digest != NULL );
}
/** An X.509 bit string */
struct x509_bit_string {
/** Data */
const void *data;
/** Length */
size_t len;
/** Unused bits at end of data */
unsigned int unused;
};
/** An X.509 issuer */
struct x509_issuer {
/** Raw issuer */
struct asn1_cursor raw;
};
/** An X.509 time */
struct x509_time {
/** Year */
uint16_t year;
/** Month */
uint8_t month;
/** Day */
uint8_t day;
/** Hour */
uint8_t hour;
/** Minute */
uint8_t minute;
/** Second */
uint8_t second;
};
/** An X.509 certificate validity period */
struct x509_validity {
/** Not valid before */
struct x509_time not_before;
/** Not valid after */
struct x509_time not_after;
};
/** An X.509 name */
struct x509_name {
/** Name (not NUL-terminated) */
const void *data;
/** Length of name */
size_t len;
};
/** An X.509 certificate public key */
struct x509_public_key {
/** Raw public key */
struct asn1_cursor raw;
/** Public key algorithm */
struct x509_algorithm *algorithm;
};
/** An X.509 certificate subject */
struct x509_subject {
/** Raw subject */
struct asn1_cursor raw;
/** Common name */
struct x509_name name;
/** Public key information */
struct x509_public_key public_key;
};
/** An X.509 certificate signature */
struct x509_signature {
/** Signature algorithm */
struct x509_algorithm *algorithm;
/** Signature value */
struct x509_bit_string value;
};
/** An X.509 certificate basic constraints set */
struct x509_basic_constraints {
/** Subject is a CA */
int ca;
/** Path length */
unsigned int path_len;
};
/** An X.509 certificate key usage */
struct x509_key_usage {
/** Key usage extension is present */
int present;
/** Usage bits */
unsigned int bits;
};
/** X.509 certificate key usage bits */
enum x509_key_usage_bits {
X509_DIGITAL_SIGNATURE = 0x0080,
X509_NON_REPUDIATION = 0x0040,
X509_KEY_ENCIPHERMENT = 0x0020,
X509_DATA_ENCIPHERMENT = 0x0010,
X509_KEY_AGREEMENT = 0x0008,
X509_KEY_CERT_SIGN = 0x0004,
X509_CRL_SIGN = 0x0002,
X509_ENCIPHER_ONLY = 0x0001,
X509_DECIPHER_ONLY = 0x8000,
};
/** An X.509 certificate extensions set */
struct x509_extensions {
/** Basic constraints */
struct x509_basic_constraints basic;
/** Key usage */
struct x509_key_usage usage;
};
/** An X.509 certificate */
struct x509_certificate {
/** Raw certificate */
struct asn1_cursor raw;
/** Version */
unsigned int version;
/** Raw tbsCertificate */
struct asn1_cursor tbs;
/** Signature algorithm */
struct x509_algorithm *signature_algorithm;
/** Issuer */
struct x509_issuer issuer;
/** Validity */
struct x509_validity validity;
/** Subject */
struct x509_subject subject;
/** Signature */
struct x509_signature signature;
/** Extensions */
struct x509_extensions extensions;
};
/** An X.509 extension */
struct x509_extension {
/** Name */
const char *name;
/** Object identifier */
struct asn1_cursor oid;
/** Parse extension
*
* @v cert X.509 certificate
* @v raw ASN.1 cursor
* @ret rc Return status code
*/
int ( * parse ) ( struct x509_certificate *cert,
const struct asn1_cursor *raw );
};
/** An X.509 root certificate store */
struct x509_root {
/** Fingerprint digest algorithm */
struct digest_algorithm *digest;
/** Number of certificates */
unsigned int count;
/** Certificate fingerprints */
const void *fingerprints;
};
extern int x509_parse ( struct x509_certificate *cert,
const void *data, size_t len );
extern int x509_validate ( struct x509_certificate *cert,
struct x509_certificate *issuer );
extern void x509_fingerprint ( struct x509_certificate *cert,
struct digest_algorithm *digest,
void *fingerprint );
extern int x509_validate_root ( struct x509_certificate *cert,
struct x509_root *root );
extern int x509_validate_chain ( int ( * parse_next )
( struct x509_certificate *cert,
void *context ),
void *context, struct x509_root *root,
struct x509_certificate *first );
#endif /* _IPXE_X509_H */
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