2.2.3.1.5.1.1 PUBLIC_KEY

The PUBLIC_KEY structure contains an encoding of a public key.

0	1	2	3	4	5	6	7	8	9	1 0	1	2	3	4	5	6	7	8	9	2 0	1	2	3	4	5	6	7	8	9	3 0	1
Size of Algorithm Id								Algorithm Parameters Length																Public Key Length
...								Reserved								Algorithm Id (variable)
...
Algorithm Parameters (variable)
...
PublicKey Data (variable)
...

Size of Algorithm Id (1 byte): The size, in little-endian byte order, of the Algorithm Id field, in bytes. MUST be set to 20 bytes.

Algorithm Parameters Length (2 bytes): The size, in little-endian byte order, of the Algorithm Parameters field, in bytes.

Public Key Length  (2 bytes): The size, in little-endian byte order, of the PublicKey Data field, in bytes. MUST be set to 140 bytes.

Reserved (1 byte): MUST be set to 0x00 and ignored on receipt.

Algorithm Id (variable): An ASN.1-encoded object identifier (OID) indicating the public key format. MUST be the same as the rsaEncryption identifier, as specified in [RFC8017] section A.1.

Algorithm Parameters (variable): An ASN.1-encoded object identifier (OID) indicating the public key format. MUST be the same as the rsaEncryption, as specified in [RFC8017] section A.1.

PublicKey Data (variable): An ASN.1-encoded 1024-bit RSA public key, as specified in [RFC8017] section A.1.1.