Change Details

This patch implements passing information about ESN from ESP and AH protocols. It also contains changes in crypto driver initialization.

Implement support for including IPSec ESN (Extended Sequence Number) to both encrypt and authenticate mode (eg. AES-CBC and SHA256) and combined mode (eg. AES-GCM). Both ESP and AH protocols are updated. Additionally pass relevant information about ESN to crypto layer. For the ETA mode the ESN is stored in separate crp_esn buffer because the high-order 32 bits of the sequence number are appended after the Next Header (RFC 4303). For the AEAD modes the high-order 32 bits of the sequence number [e.g. RFC 4106, Chapter 5 AAD Construction] are included as part of crp_aad (SPI + ESN (32 high order bits) + Seq nr (32 low order bits)).

This patch iImplements passing information about support for including IPSec ESN from ESP and AH(Extended Sequence Number) to protocols.both encrypt and authenticate mode (eg. AES-CBC and SHA256) and combined mode (eg. AES-GCM). Both ESP and AH protocols are updated. Additionally pass relevant information about ESN to crypto layer. For the ETA mode the ESN is stored in separate crp_esn buffer because the high-order 32 bits of the sequence number are appended after the Next Header (RFC 4303). For the AEAD modes the high-order 32 bits of the sequence number [e.g. RFC 4106, It also contains changes in crypto driver initializationChapter 5 AAD Construction] are included as part of crp_aad (SPI + ESN (32 high order bits) + Seq nr (32 low order bits)).