RFC 2511 defines ASN.1 syntax for putting multiple certificate request into one message:
CertReqMessages ::= SEQUENCE SIZE (1..MAX) OF CertReqMsg CertReqMsg ::= SEQUENCE { certReq CertRequest, pop ProofOfPossession OPTIONAL, -- content depends upon key type regInfo SEQUENCE SIZE(1..MAX) of AttributeTypeAndValue OPTIONAL } It is also possbile to concatentat several PEM-encoded requests into one text file. However, OpenSSL CA command seems to not support such syntax. man ca says: -in filename an input filename containing a single certificate request to be signed by the CA. Question is - how widespread is use of this syntax, is there any real-world CA which understand CertReqMessages sequence. It seems simple enough to support this syntax above openssl binary in the scripts which process incoming requests. But is this really neccessary, or there are good sequirity reasons to require people which write key generation software to process each certificate request as separate entity, even if several keys (say signature key and key encipherment key) are generated simultaneously? ______________________________________________________________________ OpenSSL Project http://www.openssl.org User Support Mailing List openssl-users@openssl.org Automated List Manager [EMAIL PROTECTED]