diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/crypto/block.h | 29 |
1 files changed, 23 insertions, 6 deletions
diff --git a/include/crypto/block.h b/include/crypto/block.h index f0e543bee1..cd18f46d56 100644 --- a/include/crypto/block.h +++ b/include/crypto/block.h @@ -161,18 +161,19 @@ QCryptoBlockInfo *qcrypto_block_get_info(QCryptoBlock *block, /** * @qcrypto_block_decrypt: * @block: the block encryption object - * @startsector: the sector from which @buf was read + * @offset: the position at which @iov was read * @buf: the buffer to decrypt * @len: the length of @buf in bytes * @errp: pointer to a NULL-initialized error object * * Decrypt @len bytes of cipher text in @buf, writing - * plain text back into @buf + * plain text back into @buf. @len and @offset must be + * a multiple of the encryption format sector size. * * Returns 0 on success, -1 on failure */ int qcrypto_block_decrypt(QCryptoBlock *block, - uint64_t startsector, + uint64_t offset, uint8_t *buf, size_t len, Error **errp); @@ -180,18 +181,19 @@ int qcrypto_block_decrypt(QCryptoBlock *block, /** * @qcrypto_block_encrypt: * @block: the block encryption object - * @startsector: the sector to which @buf will be written + * @offset: the position at which @iov will be written * @buf: the buffer to decrypt * @len: the length of @buf in bytes * @errp: pointer to a NULL-initialized error object * * Encrypt @len bytes of plain text in @buf, writing - * cipher text back into @buf + * cipher text back into @buf. @len and @offset must be + * a multiple of the encryption format sector size. * * Returns 0 on success, -1 on failure */ int qcrypto_block_encrypt(QCryptoBlock *block, - uint64_t startsector, + uint64_t offset, uint8_t *buf, size_t len, Error **errp); @@ -241,6 +243,21 @@ QCryptoHashAlgorithm qcrypto_block_get_kdf_hash(QCryptoBlock *block); uint64_t qcrypto_block_get_payload_offset(QCryptoBlock *block); /** + * qcrypto_block_get_sector_size: + * @block: the block encryption object + * + * Get the size of sectors used for payload encryption. A new + * IV is used at the start of each sector. The encryption + * sector size is not required to match the sector size of the + * underlying storage. For example LUKS will always use a 512 + * byte sector size, even if the volume is on a disk with 4k + * sectors. + * + * Returns: the sector in bytes + */ +uint64_t qcrypto_block_get_sector_size(QCryptoBlock *block); + +/** * qcrypto_block_free: * @block: the block encryption object * |