Specifications of e-Government Recommended Ciphers
This web page shows the specifications of the ciphers in the previous "e-Government Recommended Ciphers List" before the revision on March, 2013. The descriptions and web links have been kept unchanged after the revision. For the specifications of the ciphers in the "CRYPTREC Ciphers List", which is the revision of the previous "e-Government Recommended Ciphers List", please refer to "Specifications of CRYPTREC ciphers".
The "e-Government Recommended Ciphers List" (*1) was publicized by the MIC and the METI as an outcome of CRYPTREC activities.
The specifications of the ciphers listed therein are shown in the following table.
Please note that the ciphers listed in the "e-Government Recommended Ciphers List" are limited to those whose specifications are shown in the following table.
(*1) This List is approved by the administrative-information-system-related Division Managers meeting, to the effect that "each agency should promote the use of ciphers enumerated in the ‘e-Government Recommended Ciphers List,’ as much as possible, according to the required security and reliability, when using ciphers to construct an information system, by specifying in the procurement specifications, for example, that one of the requirements for bidding is to use the ciphers listed in the above-mentioned Ciphers List."
List of specifications of ciphers enumerated in the e-Government Recommended Ciphers List
| Technical classification |
Name of cipher |
Specifications |
| Public key cipher |
Signature |
DSA |
NIST FIPS 186-2 (+Change Notice 1) |
| ECDSA |
SEC 1: Elliptic Curve Cryptography(September 20, 2000 Version 1.0)
or
ANS X9.62-2005(*2)(*5) |
| RSASSA-PKCS1-v1_5 |
RSA Security Inc. Public-Key Cryptography Standards(PKCS)#1 v2.1 |
| RSA-PSS |
RSA Security Inc. Public-Key Cryptography Standards(PKCS)#1 v2.1 |
| Confidentiality |
RSA-OAEP |
RSA Security Inc. Public-Key Cryptography Standards(PKCS)#1 v2.1 |
| RSAES-PKCS1-v1_5 |
RSA Security Inc. Public-Key Cryptography Standards(PKCS)#1 v2.1 |
| Key sharing |
DH |
ANS X9.42-2003(*2)(*5)
or
Regulated as FFC DH primitive in NIST SP 800-56A(*5) |
| ECDH |
SEC 1: Elliptic Curve Cryptography(September 20, 2000 Version 1.0)
or
Regulated as C(2, 0, ECC CDH) in NIST SP 800-56A(*5) |
| PSEC-KEM |
PSEC-KEM specification (April 14, 2008) |
| Symmetric key cipher |
64-bits block cipher |
CIPHERUNICORN-E |
Cryptographic specifications CIPHERUNICORN-E |
| Hierocrypt-L1 |
Cryptographic specifications: Hierocrypt-L1 (May 2002) |
| MISTY1 |
Cryptographic specifications MISTY1 (updated May 13, 2002) |
| 3-key Triple DES |
NIST SP 800-67 |
| 128-bits block cipher |
AES |
FIPS PUB 197 |
| Camellia |
Algorithm specifications of 128-bits block cipher Camelia (2nd version: September 26, 2001) |
| CIPHERUNICORN-A |
Cryptographic specifications CIPHERUNICORN-A |
| Hierocrypt-3 |
Cryptographic specifications Hierocrypt-3 (May 2002) |
| SC2000 |
Cryptographic specifications of common block cipher SC2000 (September 26, 2001) |
| Stream cipher |
MUGI |
Pseudo random number generator MUGI specifications, version 1.3 (May 14, 2002) |
| MULTI-S01 |
Specifications MULTI-S01; Ciphers, Version 1.2 (May 14, 2002) |
128-bit RC4
(Arcfour) |
RC4 is a trademark of RSA
It is assumed that the use of 128-bit RC4 is limited to SSL3.0/TLS1.0 or higher Refer to the following literature for technical information related to the specifications
Fluhrer Scott, Itsik Mantin, and Adi Shamir. Attacks On RC4 and WEP. CryptoBytes, Vol5, No.2, P.26, Summer/Fall 2002 |
| Others |
Hash function |
RIPEMD-160 |
The hash function RIPEMD-160 |
| SHA-1 |
FIPS PUB 180-2 |
| SHA-256 |
FIPS PUB 180-2 |
| SHA-384 |
FIPS PUB 180-2 |
| SHA-512 |
FIPS PUB 180-2 |
| Pseudorandom number generating system |
PRNG based on SHA-1 in ANSI X9.42-2001 Annex C.1 |
ANS X9.42-2001 Annex C.1(*2) |
| PRNG based on SHA-1 for general purpose in FIPS 186-2 (+ change notice 1) Appendix 3.1 |
FIPS 186-2 (+ change notice 1) Appendix 3.1 |
| PRNG based on SHA-1 for general purpose in FIPS 186-2 (+ change notice 1) revised Appendix 3.1 |
FIPS 186-2 (+ change notice 1) revised Appendix 3.1 |
(*2) Specifications can be purchased from the (Foundation) Japan Standard Association.
(*3) When the linking destination is a website of another organization, the specification is managed by that organization. If you cannot obtain a link, please contact the CRYPTREC Secretariat.
(*4)Authorized by CRYPTREC Advisery Committee.(October 12,2005)
(*5)Authorized by CRYPTREC Advisery Committee.(March 25,2008,
PSEC-KEM authorized on June 10,2008)
Contact:CRYPTREC Secretariat 
