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SEED is a Block Cipher developed by the Korean Information Security Agency . It is used broadly throughout South Korean industry, but seldom found elsewhere.

SEED is a 16-round s such that each output bit depends on 3 of the 4 input bytes.

SEED has a fairly complex Key Schedule , generating its thirty-two 32-bit subkeys through application of its G-function on a series of rotations of the raw key, combined with round constants derived (as in TEA ) from the Golden Ratio .


EXTERNAL LINKS

  • SEED introduction (English)

  • SEED official specification document (English)

  • RFC 4269: The SEED encryption algorithm (obsoletes RFC 4009)

  • RFC 4010: Use of the SEED Encryption Algorithm in Cryptographic Message Syntax (CMS)

  • RFC 4196: The SEED Cipher Algorithm and Its Use with IPsec