RtsOIDGetID (FUN) ¶ FUNCTION RtsOIDGetID : RTS_IEC_RESULT Get the ID of an OID in dottet notation. InOut: Scope Name Type Comment Return RtsOIDGetID RTS_IEC_RESULT Result of the operation Input oid POINTER TO RtsOID OID to print. pBuffer POINTER TO RtsByteString Buffer where to store the ID.

RtsOIDGetName (FUN) ¶ FUNCTION RtsOIDGetName : RTS_IEC_RESULT Get the given name of an OID. If the OID is unknown to the system the dottet notation will be returned. InOut: Scope Name Type Comment Return RtsOIDGetName RTS_IEC_RESULT Result of the operation. Input oid POINTER TO RtsOID pBuffer POINTER TO RtsByteString

X509CertHasExtendedKeyUsage (FUN) ¶ FUNCTION X509CertHasExtendedKeyUsage : BOOL Check if the extended keyusages of the specified certificate has the specified extended keyusages InOut: Scope Name Type Comment Return X509CertHasExtendedKeyUsage BOOL True if all key usages are part of the certificate. Input hCert RTS_IEC_HANDLE Handle of to certificate. numOfExKeyUsages UDINT Number of extended keyusages pExKeyUsages POINTER TO RtsOID Pointer to list of extended keyusages pResult POINTER TO RTS_IEC_RESULT POINTER TO error code

X509CertHasKeyUsage (FUN) ¶ FUNCTION X509CertHasKeyUsage : BOOL Check if the specified key-usages are defined within the certificate. InOut: Scope Name Type Comment Return X509CertHasKeyUsage BOOL True if all key usages are part of the certificate. Input hCert RTS_IEC_HANDLE Handle of to certificate. keyUsage UDINT Key usages to check. Refer to Key Usage flags. pResult POINTER TO RTS_IEC_RESULT POINTER TO error code

X509CertIsAuthority (FUN) ¶ FUNCTION X509CertIsAuthority : BOOL Check if the given certificate is certificate autority. Typically this is indicated by the corresponding key usage. Some older ca certificates may be identified by other means. InOut: Scope Name Type Comment Return X509CertIsAuthority BOOL Input hCert RTS_IEC_HANDLE Handle of to certificate. pResult POINTER TO RTS_IEC_RESULT Pointer to error code. ERR_OK if everything went fine, ERR_PARAMETER if hCert was invalid. Output pathLen DINT The maximum path length of the CA. -1 if there is no limit. Only valid, if the function returned TRUE

X509CertIsDateValid (FUN) ¶ FUNCTION X509CertIsDateValid : BOOL Check if a certificate has a valid date (notbefore and notafter is in the current time period) InOut: Scope Name Type Comment Return X509CertIsDateValid BOOL True if the certificate date is valid Input hCert RTS_IEC_HANDLE Handle of to certificate. pResult POINTER TO RTS_IEC_RESULT Pointer to error code. ERR_OK: Everything went fine, ERR_PARAMETER: hCert was invalid

X509CertIsSelfSigned (FUN) ¶ FUNCTION X509CertIsSelfSigned : BOOL Check if a certificate is selfsigned of is signed by a CA authority InOut: Scope Name Type Comment Return X509CertIsSelfSigned BOOL True if the certificate is self signed, False if the certificate is signed by a CA. Input hCert RTS_IEC_HANDLE Handle of to certificate. pResult POINTER TO RTS_IEC_RESULT Pointer to error code. ERR_OK if everything went fine, ERR_PARAMETER if hCert was invalid.

X509CertKeyClose (FUN) ¶ FUNCTION X509CertKeyClose : RTS_IEC_RESULT Release a PRIVATE OR PUBLIC key with THIS FUNCTION. THIS FUNCTION indicates that this key is not needed anymore and allows to clean up ressources used by this key InOut: Scope Name Type Comment Return X509CertKeyClose RTS_IEC_RESULT Result of the operation Input pKey POINTER TO RtsCryptoKey Pointer to the key

X509ParseCertificate (FUN) ¶ FUNCTION X509ParseCertificate : RTS_IEC_HANDLE Parse a certificate which is located in the memory (e.g received FROM a communication partner). Once parsed the certificate is stored in a temporary store. Use the function X509CertClose to close the certificate. InOut: Scope Name Type Comment Return X509ParseCertificate RTS_IEC_HANDLE Handle to the parsed certificate. Input pCert POINTER TO RtsByteString Binary encoded certificate. encoding RtsCertEncoding Encoding of the certificate. pResult POINTER TO RTS_IEC_RESULT Result of the operation

CMS ¶ X509CertCmsDecrypt (Function) X509CertCmsVerify (Function)