Antony Vennard

2,492 reputation

11023

bio	website	vennard.org.uk
	location	United Kingdom
	age	24
visits	member for	1 year, 10 months
	seen	3 hours ago
stats	profile views	90

I am a software engineer by profession and a mathematics undergraduate in the evenings. I speak French, and I am generally interested in operating systems. My corner of the web is here and you might be interested in code I have written.

Questions? You can get in touch via my first name @ my domain name.

	2,492 reputation	bio	website	vennard.org.uk	visits	member for	1 year, 10 months
11023 badges		location	United Kingdom		seen	3 hours ago

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May 17	awarded	Guru
May 5	awarded	Nice Answer
Apr 24	awarded	Nice Answer
Feb 11	comment	Counter Mode in Advanced Encryption Standard(AES) Algorithm @Bulat CTR's not all that intuitive. As you say, the plain text of the block cipher primitive is in fact shared in this case (the IV+nonce). In the NIST article, you're looking for the recommendation to use $b/2$ where $b$ is the block size of the cipher - i.e. 128 for all AES variants. They do also recommend using full-block nonces - see Paulo's comments on those.
Feb 11	comment	Counter Mode in Advanced Encryption Standard(AES) Algorithm @Bulat well, it is quite often implemented that way as recommended by NIST (Appendix B.2) and no, it does not make the encryption 64-bit. There is still a 128, 192 or 256 bit key on which the security of the system depends.
Feb 4	awarded	Custodian
Feb 4	reviewed	Excellent What exactly is a negligible (and non-negligible) function?
Feb 4	reviewed	Excellent Blind quantum computing and fully homomorphic encryption
Feb 4	reviewed	Satisfactory Deriving Keys for Symmetric Encryption and Authentication
Feb 4	reviewed	Excellent Number of states in a LFSR
Feb 4	reviewed	Satisfactory Future-Proof Versioning and Validation
Feb 4	reviewed	Excellent FIPS 140 compliance for encrypted files
Feb 4	reviewed	Excellent On-the-fly computation of AES Round Keys for decryption?
Feb 4	reviewed	Excellent Does RSA-OEAP have integrity and authenticity properties?
Feb 4	reviewed	Satisfactory A situation where security by obscurity might be the best solution - or am I wrong?
Feb 4	reviewed	Satisfactory Two step encryption
Oct 12	reviewed	Approve suggested edit on Tunnels used in md5
Oct 5	revised	RSA encryption input range - plaintexts that map to ciphertexts? edited title
Oct 3	reviewed	Approve suggested edit on
Oct 3	reviewed	Approve suggested edit on