图解PKCS#1——第五部分 附录Mask generation functions MGF1

A. ASN.1编码

For the nine hash functions mentioned in Appendix B.1, the DER encoding T of the DigestInfo value is equal to the following:

MD2: (0x)30 20 30 0c 06 08 2a 86 48 86 f7 0d 02 02 05 00 04 10 || H.

MD5: (0x)30 20 30 0c 06 08 2a 86 48 86 f7 0d 02 05 05 00 04 10 || H.

SHA-1: (0x)30 21 30 09 06 05 2b 0e 03 02 1a 05 00 04 14 || H.

SHA-224: (0x)30 2d 30 0d 06 09 60 86 48 01 65 03 04 02 04 05 00 04 1c || H.

SHA-256: (0x)30 31 30 0d 06 09 60 86 48 01 65 03 04 02 01 05 00 04 20 || H.

SHA-384: (0x)30 41 30 0d 06 09 60 86 48 01 65 03 04 02 02 05 00 04 30 || H.

SHA-512: (0x)30 51 30 0d 06 09 60 86 48 01 65 03 04 02 03 05 00 04 40 || H.

SHA-512/224: (0x)30 2d 30 0d 06 09 60 86 48 01 65 03 04 02 05 05 00 04 1c || H.

SHA-512/256: (0x)30 31 30 0d 06 09 60 86 48 01 65 03 04 02 06 05 00 04 20 || H.

B. MGF

Mask generation functions MGF1参见B.2

图解PKCS#1——第五部分 附录Mask generation functions MGF1_第1张图片

图7 MGF流程图

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