mbed TLS v1.3.18
Data Structures | Macros | Functions
X.509 module

The X.509 module provides X.509 support which includes: More...

Data Structures

struct  _x509_time
 Container for date and time (precision in seconds). More...
 
struct  _x509_crl_entry
 Certificate revocation list entry. More...
 
struct  _x509_crl
 Certificate revocation list structure. More...
 
struct  _x509_crt
 Container for an X.509 certificate. More...
 
struct  _x509write_cert
 Container for writing a certificate (CRT) More...
 
struct  _x509_csr
 Certificate Signing Request (CSR) structure. More...
 
struct  _x509write_csr
 Container for writing a CSR. More...
 

Macros

#define POLARSSL_X509_MAX_INTERMEDIATE_CA   8
 Maximum number of intermediate CAs in a verification chain. More...
 

Functions

int dhm_parse_dhm (dhm_context *dhm, const unsigned char *dhmin, size_t dhminlen)
 Parse DHM parameters. More...
 
int dhm_parse_dhmfile (dhm_context *dhm, const char *path)
 Load and parse DHM parameters. More...
 

X509 Error codes

#define POLARSSL_ERR_X509_FEATURE_UNAVAILABLE   -0x2080
 Unavailable feature, e.g. More...
 
#define POLARSSL_ERR_X509_UNKNOWN_OID   -0x2100
 Requested OID is unknown. More...
 
#define POLARSSL_ERR_X509_INVALID_FORMAT   -0x2180
 The CRT/CRL/CSR format is invalid, e.g. More...
 
#define POLARSSL_ERR_X509_INVALID_VERSION   -0x2200
 The CRT/CRL/CSR version element is invalid. More...
 
#define POLARSSL_ERR_X509_INVALID_SERIAL   -0x2280
 The serial tag or value is invalid. More...
 
#define POLARSSL_ERR_X509_INVALID_ALG   -0x2300
 The algorithm tag or value is invalid. More...
 
#define POLARSSL_ERR_X509_INVALID_NAME   -0x2380
 The name tag or value is invalid. More...
 
#define POLARSSL_ERR_X509_INVALID_DATE   -0x2400
 The date tag or value is invalid. More...
 
#define POLARSSL_ERR_X509_INVALID_SIGNATURE   -0x2480
 The signature tag or value invalid. More...
 
#define POLARSSL_ERR_X509_INVALID_EXTENSIONS   -0x2500
 The extension tag or value is invalid. More...
 
#define POLARSSL_ERR_X509_UNKNOWN_VERSION   -0x2580
 CRT/CRL/CSR has an unsupported version number. More...
 
#define POLARSSL_ERR_X509_UNKNOWN_SIG_ALG   -0x2600
 Signature algorithm (oid) is unsupported. More...
 
#define POLARSSL_ERR_X509_SIG_MISMATCH   -0x2680
 Signature algorithms do not match. More...
 
#define POLARSSL_ERR_X509_CERT_VERIFY_FAILED   -0x2700
 Certificate verification failed, e.g. More...
 
#define POLARSSL_ERR_X509_CERT_UNKNOWN_FORMAT   -0x2780
 Format not recognized as DER or PEM. More...
 
#define POLARSSL_ERR_X509_BAD_INPUT_DATA   -0x2800
 Input invalid. More...
 
#define POLARSSL_ERR_X509_MALLOC_FAILED   -0x2880
 Allocation of memory failed. More...
 
#define POLARSSL_ERR_X509_FILE_IO_ERROR   -0x2900
 Read/write of file failed. More...
 

X509 Verify codes

#define BADCERT_EXPIRED   0x01
 The certificate validity has expired. More...
 
#define BADCERT_REVOKED   0x02
 The certificate has been revoked (is on a CRL). More...
 
#define BADCERT_CN_MISMATCH   0x04
 The certificate Common Name (CN) does not match with the expected CN. More...
 
#define BADCERT_NOT_TRUSTED   0x08
 The certificate is not correctly signed by the trusted CA. More...
 
#define BADCRL_NOT_TRUSTED   0x10
 The CRL is not correctly signed by the trusted CA. More...
 
#define BADCRL_EXPIRED   0x20
 The CRL is expired. More...
 
#define BADCERT_MISSING   0x40
 Certificate was missing. More...
 
#define BADCERT_SKIP_VERIFY   0x80
 Certificate verification was skipped. More...
 
#define BADCERT_OTHER   0x0100
 Other reason (can be used by verify callback) More...
 
#define BADCERT_FUTURE   0x0200
 The certificate validity starts in the future. More...
 
#define BADCRL_FUTURE   0x0400
 The CRL is from the future. More...
 
#define BADCERT_KEY_USAGE   0x0800
 Usage does not match the keyUsage extension. More...
 
#define BADCERT_EXT_KEY_USAGE   0x1000
 Usage does not match the extendedKeyUsage extension. More...
 
#define BADCERT_NS_CERT_TYPE   0x2000
 Usage does not match the nsCertType extension. More...
 

Structures for parsing X.509 certificates, CRLs and CSRs

typedef asn1_buf x509_buf
 Type-length-value structure that allows for ASN1 using DER. More...
 
typedef asn1_bitstring x509_bitstring
 Container for ASN1 bit strings. More...
 
typedef asn1_named_data x509_name
 Container for ASN1 named information objects. More...
 
typedef asn1_sequence x509_sequence
 Container for a sequence of ASN.1 items. More...
 
typedef struct _x509_time x509_time
 Container for date and time (precision in seconds). More...
 

Structures and functions for parsing CRLs

typedef struct _x509_crl_entry x509_crl_entry
 Certificate revocation list entry. More...
 
typedef struct _x509_crl x509_crl
 Certificate revocation list structure. More...
 
int x509_crl_parse_der (x509_crl *chain, const unsigned char *buf, size_t buflen)
 Parse a DER-encoded CRL and append it to the chained list. More...
 
int x509_crl_parse (x509_crl *chain, const unsigned char *buf, size_t buflen)
 Parse one or more CRLs and append them to the chained list. More...
 
int x509_crl_parse_file (x509_crl *chain, const char *path)
 Load one or more CRLs and append them to the chained list. More...
 
int x509_crl_info (char *buf, size_t size, const char *prefix, const x509_crl *crl)
 Returns an informational string about the CRL. More...
 
void x509_crl_init (x509_crl *crl)
 Initialize a CRL (chain) More...
 
void x509_crl_free (x509_crl *crl)
 Unallocate all CRL data. More...
 

Structures and functions for parsing and writing X.509 certificates

typedef struct _x509_crt x509_crt
 Container for an X.509 certificate. More...
 
typedef struct _x509write_cert x509write_cert
 Container for writing a certificate (CRT) More...
 
int x509_crt_parse_der (x509_crt *chain, const unsigned char *buf, size_t buflen)
 Parse a single DER formatted certificate and add it to the chained list. More...
 
int x509_crt_parse (x509_crt *chain, const unsigned char *buf, size_t buflen)
 Parse one or more certificates and add them to the chained list. More...
 
int x509_crt_parse_file (x509_crt *chain, const char *path)
 Load one or more certificates and add them to the chained list. More...
 
int x509_crt_parse_path (x509_crt *chain, const char *path)
 Load one or more certificate files from a path and add them to the chained list. More...
 
int x509_crt_info (char *buf, size_t size, const char *prefix, const x509_crt *crt)
 Returns an informational string about the certificate. More...
 
int x509_crt_verify_info (char *buf, size_t size, const char *prefix, int flags)
 Returns an informational string about the verification status of a certificate. More...
 
int x509_crt_verify (x509_crt *crt, x509_crt *trust_ca, x509_crl *ca_crl, const char *cn, int *flags, int(*f_vrfy)(void *, x509_crt *, int, int *), void *p_vrfy)
 Verify the certificate signature. More...
 
int x509_crt_check_key_usage (const x509_crt *crt, int usage)
 Check usage of certificate against keyUsage extension. More...
 
int x509_crt_check_extended_key_usage (const x509_crt *crt, const char *usage_oid, size_t usage_len)
 Check usage of certificate against extentedJeyUsage. More...
 
int x509_crt_revoked (const x509_crt *crt, const x509_crl *crl)
 Verify the certificate revocation status. More...
 
void x509_crt_init (x509_crt *crt)
 Initialize a certificate (chain) More...
 
void x509_crt_free (x509_crt *crt)
 Unallocate all certificate data. More...
 
#define X509_CRT_VERSION_1   0
 
#define X509_CRT_VERSION_2   1
 
#define X509_CRT_VERSION_3   2
 
#define X509_RFC5280_MAX_SERIAL_LEN   32
 
#define X509_RFC5280_UTC_TIME_LEN   15
 

Structures and functions for X.509 Certificate Signing Requests (CSR)

typedef struct _x509_csr x509_csr
 Certificate Signing Request (CSR) structure. More...
 
typedef struct _x509write_csr x509write_csr
 Container for writing a CSR. More...
 
int x509_csr_parse_der (x509_csr *csr, const unsigned char *buf, size_t buflen)
 Load a Certificate Signing Request (CSR) in DER format. More...
 
int x509_csr_parse (x509_csr *csr, const unsigned char *buf, size_t buflen)
 Load a Certificate Signing Request (CSR), DER or PEM format. More...
 
int x509_csr_parse_file (x509_csr *csr, const char *path)
 Load a Certificate Signing Request (CSR) More...
 
int x509_csr_info (char *buf, size_t size, const char *prefix, const x509_csr *csr)
 Returns an informational string about the CSR. More...
 
void x509_csr_init (x509_csr *csr)
 Initialize a CSR. More...
 
void x509_csr_free (x509_csr *csr)
 Unallocate all CSR data. More...
 

Detailed Description

The X.509 module provides X.509 support which includes:

This module can be used to build a certificate authority (CA) chain and verify its signature. It is also used to generate Certificate Signing Requests and X509 certificates just as a CA would do.

Macro Definition Documentation

#define BADCERT_CN_MISMATCH   0x04

The certificate Common Name (CN) does not match with the expected CN.

Definition at line 88 of file x509.h.

#define BADCERT_EXPIRED   0x01

The certificate validity has expired.

Definition at line 86 of file x509.h.

#define BADCERT_EXT_KEY_USAGE   0x1000

Usage does not match the extendedKeyUsage extension.

Definition at line 98 of file x509.h.

#define BADCERT_FUTURE   0x0200

The certificate validity starts in the future.

Definition at line 95 of file x509.h.

#define BADCERT_KEY_USAGE   0x0800

Usage does not match the keyUsage extension.

Definition at line 97 of file x509.h.

#define BADCERT_MISSING   0x40

Certificate was missing.

Definition at line 92 of file x509.h.

#define BADCERT_NOT_TRUSTED   0x08

The certificate is not correctly signed by the trusted CA.

Definition at line 89 of file x509.h.

#define BADCERT_NS_CERT_TYPE   0x2000

Usage does not match the nsCertType extension.

Definition at line 99 of file x509.h.

#define BADCERT_OTHER   0x0100

Other reason (can be used by verify callback)

Definition at line 94 of file x509.h.

#define BADCERT_REVOKED   0x02

The certificate has been revoked (is on a CRL).

Definition at line 87 of file x509.h.

#define BADCERT_SKIP_VERIFY   0x80

Certificate verification was skipped.

Definition at line 93 of file x509.h.

#define BADCRL_EXPIRED   0x20

The CRL is expired.

Definition at line 91 of file x509.h.

#define BADCRL_FUTURE   0x0400

The CRL is from the future.

Definition at line 96 of file x509.h.

#define BADCRL_NOT_TRUSTED   0x10

The CRL is not correctly signed by the trusted CA.

Definition at line 90 of file x509.h.

#define POLARSSL_ERR_X509_BAD_INPUT_DATA   -0x2800

Input invalid.

Definition at line 76 of file x509.h.

#define POLARSSL_ERR_X509_CERT_UNKNOWN_FORMAT   -0x2780

Format not recognized as DER or PEM.

Definition at line 75 of file x509.h.

#define POLARSSL_ERR_X509_CERT_VERIFY_FAILED   -0x2700

Certificate verification failed, e.g.

CRL, CA or signature check failed.

Definition at line 74 of file x509.h.

#define POLARSSL_ERR_X509_FEATURE_UNAVAILABLE   -0x2080

Unavailable feature, e.g.

RSA hashing/encryption combination.

Definition at line 61 of file x509.h.

#define POLARSSL_ERR_X509_FILE_IO_ERROR   -0x2900

Read/write of file failed.

Definition at line 78 of file x509.h.

#define POLARSSL_ERR_X509_INVALID_ALG   -0x2300

The algorithm tag or value is invalid.

Definition at line 66 of file x509.h.

#define POLARSSL_ERR_X509_INVALID_DATE   -0x2400

The date tag or value is invalid.

Definition at line 68 of file x509.h.

#define POLARSSL_ERR_X509_INVALID_EXTENSIONS   -0x2500

The extension tag or value is invalid.

Definition at line 70 of file x509.h.

#define POLARSSL_ERR_X509_INVALID_FORMAT   -0x2180

The CRT/CRL/CSR format is invalid, e.g.

different type expected.

Definition at line 63 of file x509.h.

#define POLARSSL_ERR_X509_INVALID_NAME   -0x2380

The name tag or value is invalid.

Definition at line 67 of file x509.h.

#define POLARSSL_ERR_X509_INVALID_SERIAL   -0x2280

The serial tag or value is invalid.

Definition at line 65 of file x509.h.

#define POLARSSL_ERR_X509_INVALID_SIGNATURE   -0x2480

The signature tag or value invalid.

Definition at line 69 of file x509.h.

#define POLARSSL_ERR_X509_INVALID_VERSION   -0x2200

The CRT/CRL/CSR version element is invalid.

Definition at line 64 of file x509.h.

#define POLARSSL_ERR_X509_MALLOC_FAILED   -0x2880

Allocation of memory failed.

Definition at line 77 of file x509.h.

#define POLARSSL_ERR_X509_SIG_MISMATCH   -0x2680

Signature algorithms do not match.

(see x509_crt sig_oid)

Definition at line 73 of file x509.h.

#define POLARSSL_ERR_X509_UNKNOWN_OID   -0x2100

Requested OID is unknown.

Definition at line 62 of file x509.h.

#define POLARSSL_ERR_X509_UNKNOWN_SIG_ALG   -0x2600

Signature algorithm (oid) is unsupported.

Definition at line 72 of file x509.h.

#define POLARSSL_ERR_X509_UNKNOWN_VERSION   -0x2580

CRT/CRL/CSR has an unsupported version number.

Definition at line 71 of file x509.h.

#define POLARSSL_X509_MAX_INTERMEDIATE_CA   8

Maximum number of intermediate CAs in a verification chain.

That is, maximum length of the chain, excluding the end-entity certificate and the trusted root certificate.

Set this to a low value to prevent an adversary from making you waste resources verifying an overlong certificate chain.

Definition at line 54 of file x509.h.

#define X509_CRT_VERSION_1   0

Definition at line 98 of file x509_crt.h.

#define X509_CRT_VERSION_2   1

Definition at line 99 of file x509_crt.h.

#define X509_CRT_VERSION_3   2

Definition at line 100 of file x509_crt.h.

#define X509_RFC5280_MAX_SERIAL_LEN   32

Definition at line 102 of file x509_crt.h.

#define X509_RFC5280_UTC_TIME_LEN   15

Definition at line 103 of file x509_crt.h.

Typedef Documentation

Container for ASN1 bit strings.

Definition at line 182 of file x509.h.

typedef asn1_buf x509_buf

Type-length-value structure that allows for ASN1 using DER.

Definition at line 177 of file x509.h.

typedef struct _x509_crl x509_crl

Certificate revocation list structure.

Every CRL may have multiple entries.

Certificate revocation list entry.

Contains the CA-specific serial numbers and revocation dates.

typedef struct _x509_crt x509_crt

Container for an X.509 certificate.

The certificate may be chained.

typedef struct _x509_csr x509_csr

Certificate Signing Request (CSR) structure.

Container for ASN1 named information objects.

It allows for Relative Distinguished Names (e.g. cn=polarssl,ou=code,etc.).

Definition at line 188 of file x509.h.

Container for a sequence of ASN.1 items.

Definition at line 193 of file x509.h.

typedef struct _x509_time x509_time

Container for date and time (precision in seconds).

Container for writing a certificate (CRT)

typedef struct _x509write_csr x509write_csr

Container for writing a CSR.

Function Documentation

int dhm_parse_dhm ( dhm_context dhm,
const unsigned char *  dhmin,
size_t  dhminlen 
)

Parse DHM parameters.

Parameters
dhmDHM context to be initialized
dhmininput buffer
dhminlensize of the buffer
Returns
0 if successful, or a specific DHM or PEM error code
int dhm_parse_dhmfile ( dhm_context dhm,
const char *  path 
)

Load and parse DHM parameters.

Parameters
dhmDHM context to be initialized
pathfilename to read the DHM Parameters from
Returns
0 if successful, or a specific DHM or PEM error code
void x509_crl_free ( x509_crl crl)

Unallocate all CRL data.

Parameters
crlCRL chain to free
int x509_crl_info ( char *  buf,
size_t  size,
const char *  prefix,
const x509_crl crl 
)

Returns an informational string about the CRL.

Parameters
bufBuffer to write to
sizeMaximum size of buffer
prefixA line prefix
crlThe X509 CRL to represent
Returns
The amount of data written to the buffer, or -1 in case of an error.

Referenced by x509parse_crl_info().

void x509_crl_init ( x509_crl crl)

Initialize a CRL (chain)

Parameters
crlCRL chain to initialize
int x509_crl_parse ( x509_crl chain,
const unsigned char *  buf,
size_t  buflen 
)

Parse one or more CRLs and append them to the chained list.

Note
Mutliple CRLs are accepted only if using PEM format
Parameters
chainpoints to the start of the chain
bufbuffer holding the CRL data in PEM or DER format
buflensize of the buffer
Returns
0 if successful, or a specific X509 or PEM error code

Referenced by x509parse_crl().

int x509_crl_parse_der ( x509_crl chain,
const unsigned char *  buf,
size_t  buflen 
)

Parse a DER-encoded CRL and append it to the chained list.

Parameters
chainpoints to the start of the chain
bufbuffer holding the CRL data in DER format
buflensize of the buffer
Returns
0 if successful, or a specific X509 or PEM error code
int x509_crl_parse_file ( x509_crl chain,
const char *  path 
)

Load one or more CRLs and append them to the chained list.

Note
Mutliple CRLs are accepted only if using PEM format
Parameters
chainpoints to the start of the chain
pathfilename to read the CRLs from (in PEM or DER encoding)
Returns
0 if successful, or a specific X509 or PEM error code

Referenced by x509parse_crlfile().

int x509_crt_check_extended_key_usage ( const x509_crt crt,
const char *  usage_oid,
size_t  usage_len 
)

Check usage of certificate against extentedJeyUsage.

Parameters
crtLeaf certificate used.
usage_oidIntended usage (eg OID_SERVER_AUTH or OID_CLIENT_AUTH).
usage_lenLength of usage_oid (eg given by OID_SIZE()).
Returns
0 is this use of the certificate is allowed, POLARSSL_ERR_X509_BAD_INPUT_DATA if not.
Note
Usually only makes sense on leaf certificates.
int x509_crt_check_key_usage ( const x509_crt crt,
int  usage 
)

Check usage of certificate against keyUsage extension.

Parameters
crtLeaf certificate used.
usageIntended usage(s) (eg KU_KEY_ENCIPHERMENT before using the certificate to perform an RSA key exchange).
Returns
0 is these uses of the certificate are allowed, POLARSSL_ERR_X509_BAD_INPUT_DATA if the keyUsage extension is present but does not contain all the bits set in the usage argument.
Note
You should only call this function on leaf certificates, on (intermediate) CAs the keyUsage extension is automatically checked by x509_crt_verify().
void x509_crt_free ( x509_crt crt)

Unallocate all certificate data.

Parameters
crtCertificate chain to free

Referenced by x509_free().

int x509_crt_info ( char *  buf,
size_t  size,
const char *  prefix,
const x509_crt crt 
)

Returns an informational string about the certificate.

Parameters
bufBuffer to write to
sizeMaximum size of buffer
prefixA line prefix
crtThe X509 certificate to represent
Returns
The amount of data written to the buffer, or -1 in case of an error.

Referenced by x509parse_cert_info().

void x509_crt_init ( x509_crt crt)

Initialize a certificate (chain)

Parameters
crtCertificate chain to initialize
int x509_crt_parse ( x509_crt chain,
const unsigned char *  buf,
size_t  buflen 
)

Parse one or more certificates and add them to the chained list.

Parses permissively. If some certificates can be parsed, the result is the number of failed certificates it encountered. If none complete correctly, the first error is returned.

Parameters
chainpoints to the start of the chain
bufbuffer holding the certificate data
buflensize of the buffer
Returns
0 if all certificates parsed successfully, a positive number if partly successful or a specific X509 or PEM error code

Referenced by x509parse_crt().

int x509_crt_parse_der ( x509_crt chain,
const unsigned char *  buf,
size_t  buflen 
)

Parse a single DER formatted certificate and add it to the chained list.

Parameters
chainpoints to the start of the chain
bufbuffer holding the certificate DER data
buflensize of the buffer
Returns
0 if successful, or a specific X509 or PEM error code

Referenced by x509parse_crt_der().

int x509_crt_parse_file ( x509_crt chain,
const char *  path 
)

Load one or more certificates and add them to the chained list.

Parses permissively. If some certificates can be parsed, the result is the number of failed certificates it encountered. If none complete correctly, the first error is returned.

Parameters
chainpoints to the start of the chain
pathfilename to read the certificates from
Returns
0 if all certificates parsed successfully, a positive number if partly successful or a specific X509 or PEM error code

Referenced by x509parse_crtfile().

int x509_crt_parse_path ( x509_crt chain,
const char *  path 
)

Load one or more certificate files from a path and add them to the chained list.

Parses permissively. If some certificates can be parsed, the result is the number of failed certificates it encountered. If none complete correctly, the first error is returned.

Warning
This function is NOT thread-safe unless POLARSSL_THREADING_PTHREADS is defined. If you're using an alternative threading implementation, you should either use this function only in the main thread, or mutex it.
Parameters
chainpoints to the start of the chain
pathdirectory / folder to read the certificate files from
Returns
0 if all certificates parsed successfully, a positive number if partly successful or a specific X509 or PEM error code

Referenced by x509parse_crtpath().

int x509_crt_revoked ( const x509_crt crt,
const x509_crl crl 
)

Verify the certificate revocation status.

Parameters
crta certificate to be verified
crlthe CRL to verify against
Returns
1 if the certificate is revoked, 0 otherwise

Referenced by x509parse_revoked().

int x509_crt_verify ( x509_crt crt,
x509_crt trust_ca,
x509_crl ca_crl,
const char *  cn,
int *  flags,
int(*)(void *, x509_crt *, int, int *)  f_vrfy,
void *  p_vrfy 
)

Verify the certificate signature.

The verify callback is a user-supplied callback that can clear / modify / add flags for a certificate. If set, the verification callback is called for each certificate in the chain (from the trust-ca down to the presented crt). The parameters for the callback are: (void *parameter, x509_crt *crt, int certificate_depth, int *flags). With the flags representing current flags for that specific certificate and the certificate depth from the bottom (Peer cert depth = 0).

All flags left after returning from the callback are also returned to the application. The function should return 0 for anything but a fatal error.

Note
In case verification failed, the results can be displayed using x509_crt_verify_info()
Parameters
crta certificate to be verified
trust_cathe trusted CA chain
ca_crlthe CRL chain for trusted CA's
cnexpected Common Name (can be set to NULL if the CN must not be verified)
flagsresult of the verification
f_vrfyverification function
p_vrfyverification parameter
Returns
0 if successful or POLARSSL_ERR_X509_SIG_VERIFY_FAILED, in which case *flags will have one or more BADCERT_XXX or BADCRL_XXX flags set, or another error in case of a fatal error encountered during the verification process.

Referenced by x509parse_verify().

int x509_crt_verify_info ( char *  buf,
size_t  size,
const char *  prefix,
int  flags 
)

Returns an informational string about the verification status of a certificate.

Parameters
bufBuffer to write to
sizeMaximum size of buffer
prefixA line prefix
flagsVerification flags created by x509_crt_verify()
Returns
The amount of data written to the buffer, or -1 in case of an error.
void x509_csr_free ( x509_csr csr)

Unallocate all CSR data.

Parameters
csrCSR to free
int x509_csr_info ( char *  buf,
size_t  size,
const char *  prefix,
const x509_csr csr 
)

Returns an informational string about the CSR.

Parameters
bufBuffer to write to
sizeMaximum size of buffer
prefixA line prefix
csrThe X509 CSR to represent
Returns
The length of the string written (exluding the terminating null byte), or a negative value in case of an error.

Referenced by x509parse_csr_info().

void x509_csr_init ( x509_csr csr)

Initialize a CSR.

Parameters
csrCSR to initialize
int x509_csr_parse ( x509_csr csr,
const unsigned char *  buf,
size_t  buflen 
)

Load a Certificate Signing Request (CSR), DER or PEM format.

Parameters
csrCSR context to fill
bufbuffer holding the CRL data
buflensize of the buffer
Returns
0 if successful, or a specific X509 or PEM error code

Referenced by x509parse_csr().

int x509_csr_parse_der ( x509_csr csr,
const unsigned char *  buf,
size_t  buflen 
)

Load a Certificate Signing Request (CSR) in DER format.

Parameters
csrCSR context to fill
bufbuffer holding the CRL data
buflensize of the buffer
Returns
0 if successful, or a specific X509 error code
int x509_csr_parse_file ( x509_csr csr,
const char *  path 
)

Load a Certificate Signing Request (CSR)

Parameters
csrCSR context to fill
pathfilename to read the CSR from
Returns
0 if successful, or a specific X509 or PEM error code

Referenced by x509parse_csrfile().