In
cryptography,
Hierocrypt-L1 and
Hierocrypt-3 are
block ciphers created by
Toshiba in 2000. They were submitted to the
NESSIE project, but were not selected. Both algorithms were among the cryptographic techniques recommended for Japanese government use by
CRYPTREC in 2003, however, both have been dropped to "candidate" by CRYPTREC revision in 2013.