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DNS SECURITY ALGORITHM NUMBERS
DNS KEY and SIG RRs [RFC2535] use an 8-bit number used to identify
the security algorithm being used:
Number Description Reference
--------- ------------------------------ ---------
0 Reserved
1 RSA/MD5 [RFC2537,RFC1321]
deprecated, see 5
2 Diffie-Hellman [RFC2539]
3 DSA/SHA1 [RFC2536,DSA,SHA-1]
4 Reserved for Elliptic Curve Crypto
5 RSA/SHA-1 [RFC3110]
6 - 251 Reserved by the IANA
252 Reserved for indirect keys [RFC2535]
253 Private algorithms - domain name [RFC2535]
254 Private algorithms - OID [RFC2535]
255 Reserved
REFERENCES
----------
[RFC1321] R. Rivest, "The MD5 Message-Digest Algorithm",
RFC 1321, April 1992.
[RFC2535] D. Eastlake, "Domain Name System Security Extensions",
RFC 2535. March 1999.
[RFC2536] D. Eastlake, "DSA KEYs and SIGs in the Domain Name
System (DNS)", RFC 2436, March 1999.
[RFC2537] D. Eastlake, "RSA/MD5 KEYs and SIGs in the Domain
Name System (DNS)", RFC 2537, March 1999.
[RFC2539] D. Eastlake, "Storage of Diffie-Hellman Keys in the
Domain Name System (DNS)", RFC 2539, March 1999.
[RFC3110] D. Eastlake, "RSA/SHA-1 SIGs and RSA KEYs in the
Domain Name System (DNS)", RFC 3110, May 2001.
[DSA] Federal Information Processing Standards Publication
(FIPS PUB) 186, Digital Signature Standard, 18 May 1994.
[SHA-1] Federal Information Processing Standards Publication
(FIPS PUB) 180-1, Secure Hash Standard, 17 April 1995.
[Supersedes FIPS PUB 180 dated 11 May 1993.]
PEOPLE
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(last updated 05/21/01)
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