Most commonly used OpenPGP symmetric ciphers

David Shaw dshaw at
Wed Apr 14 23:01:08 CEST 2004

On Wed, Apr 14, 2004 at 04:44:27PM -0400, Hasnain Mujtaba wrote:
> Hi,
> The OpenPGP standard supports many symmetric key algorithms (IDEA,
> 3-DES, CAST5, AES, Blowfish, SAFER). I was wondering which of these
> algorithms are most commonly used in the industry. Is there a most
> commonly used algorithm from this list? 

Most commonly used is a hard question.  Most commonly used for *what*?
Historically, banking systems used 3DES (common for financial stuff).
PGP users used IDEA (because that is all that PGP 2 had), etc.


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