public_key
API module for public key infrastructure.
This module provides functions to handle public key infrastructure from RFC 5280 - X.509 certificates and some parts of the PKCS-standard.
COMMON DATA TYPES
Note!
All records used in this manual are generated from asn1 specifications and are documented in the User's Guide. See Public key records and X.509 Certificate records.
Use the following include directive to get access to the records and constant macros described here and in the User's Guide.
-include_lib("public_key/include/public_key.hrl").
Data Types
boolean() = true | false
string = [bytes()]
der_encoded() = binary()
decrypt_der() = binary()
pki_asn1_type() = 'Certificate' | 'RSAPrivateKey'|
'DSAPrivateKey' | 'DHParameter'
pem_entry () = {pki_asn1_type(), der_encoded() | decrypt_der(), not_encrypted |
{"DES-CBC" | "DES-EDE3-CBC", crypto:rand_bytes(8)}}.
rsa_public_key() = #'RSAPublicKey'{}
rsa_private_key() = #'RSAPrivateKey'{}
dsa_public_key() = {integer(), #'Dss-Parms'{}}
rsa_private_key() = #'RSAPrivateKey'{}
dsa_private_key() = #'DSAPrivateKey'{}
public_crypt_options() = [{rsa_pad, rsa_padding()}].
rsa_padding() = 'rsa_pkcs1_padding' | 'rsa_pkcs1_oaep_padding'
| 'rsa_no_padding'
rsa_digest_type() = 'md5' | 'sha'
dss_digest_type() = 'none' | 'sha'
Functions
decrypt_private(CipherText, Key [, Options]) -> binary()
CipherText = binary()
Key = rsa_private_key()
Options = public_crypt_options()
Public key decryption using the private key.
decrypt_public(CipherText, Key [, Options]) - > binary()
CipherText = binary()
Key = rsa_public_key()
Options = public_crypt_options()
Public key decryption using the public key.
der_decode(Asn1type, Der) -> term()
Asn1Type = atom() -
Der = der_encoded()
Decodes a public key asn1 der encoded entity.
der_encode(Asn1Type, Entity) -> der_encoded()
Asn1Type = atom()
Entity = term() - The erlang representation of
Asn1Type
Encodes a public key entity with asn1 DER encoding.
pem_decode(PemBin) -> [pem_entry()]
PemBin = binary()
Decode PEM binary data and return entries as asn1 der encoded entities.
pem_encode(PemEntries) -> binary()
PemEntries = [pem_entry()]
Creates a PEM binary
pem_entry_decode(PemEntry [, Password]) -> term()
PemEntry = pem_entry()
Password = string()
Decodes a pem entry. pem_decode/1 returns a list of pem entries.
pem_entry_encode(Asn1Type, Entity [,{CipherInfo, Password}]) -> pem_entry()
Asn1Type = atom()
Entity = term()
CipherInfo = {"DES-CBC" | "DES-EDE3-CBC", crypto:rand_bytes(8)}
Password = string()
Creates a pem entry that can be feed to pem_encode/1.
encrypt_private(PlainText, Key) -> binary()
PlainText = binary()
Key = rsa_private_key()
Public key encryption using the private key.
encrypt_public(PlainText, Key) -> binary()
PlainText = binary()
Key = rsa_public_key()
Public key encryption using the public key.
pkix_decode_cert(Cert, otp|plain) -> #'Certificate'{} | #'OTPCertificate'{}
Cert = der_encoded()
Decodes an asn1 der encoded pkix certificate. The otp option will use the customized asn1 specification OTP-PKIX.asn1 for decoding and also recursively decode most of the standard parts.
pkix_encode(Asn1Type, Entity, otp | plain) -> der_encoded()
Asn1Type = atom()
Der encodes a pkix x509 certificate or part of such a certificate. This function must be used for encoding certificates or parts of certificates that are decoded/created on the otp format, whereas for the plain format this function will directly call der_encode/2.
pkix_is_issuer(Cert, IssuerCert) -> boolean()
Cert = der_encode() | #'OTPCertificate'{}
IssuerCert = der_encode() | #'OTPCertificate'{}
Checks if IssuerCert
issued Cert
pkix_is_fixed_dh_cert(Cert) -> boolean()
Cert = der_encode() | #'OTPCertificate'{}
Checks if a Certificate is a fixed Diffie-Hellman Cert.
pkix_is_self_signed(Cert) -> boolean()
Cert = der_encode() | #'OTPCertificate'{}
Checks if a Certificate is self signed.
pkix_issuer_id(Cert, IssuedBy) -> {ok, IssuerID} | {error, Reason}
Cert = der_encode() | #'OTPCertificate'{}
IssuedBy = self | other
IssuerID = {integer(), {rdnSequence, [#'AttributeTypeAndValue'{}]}}
Reason = term()
Returns the issuer id.
pkix_normalize_name(Issuer) -> Normalized
Issuer = {rdnSequence,[#'AttributeTypeAndValue'{}]}
Normalized = {rdnSequence, [#'AttributeTypeAndValue'{}]}
Normalizes a issuer name so that it can be easily compared to another issuer name.
pkix_sign(#'OTPTBSCertificate'{}, Key) -> der_encode()
Key = rsa_public_key() | dsa_public_key()
Signs a 'OTPTBSCertificate'. Returns the corresponding der encoded certificate.
pkix_verify(Cert, Key) -> boolean()
Cert = der_encode()
Key = rsa_public_key() | dsa_public_key()
Verify pkix x.509 certificate signature.
sign(Msg, DigestType, Key) -> binary()
Msg = binary()
DigestType = rsa_digest_type() | dsa_digest_type()
Key = rsa_public_key() | dsa_public_key()
none
it is the hashed value of "plain text" i.e. the digest.Creates a digital signature.
verify(Msg, DigestType, Signature, Key) -> boolean()
Msg = binary()
DigestType = rsa_digest_type() | dsa_digest_type()
Signature = binary()
Key = rsa_public_key() | dsa_public_key()
none
it is the hashed value of "plain text" i.e. the digest.Verifies a digital signature
- decrypt_private/3
- decrypt_public/3
- der_decode/2
- der_encode/2
- pem_decode/1
- pem_encode/1
- pem_entry_decode/2
- pem_entry_encode/4
- encrypt_private/2
- encrypt_public/2
- pkix_decode_cert/2
- pkix_encode/3
- pkix_is_issuer/2
- pkix_is_fixed_dh_cert/1
- pkix_is_self_signed/1
- pkix_issuer_id/2
- pkix_normalize_name/1
- pkix_sign/2
- pkix_verify/2
- sign/3
- verify/4