\r
@param[in] P7Data Pointer to the PKCS#7 message.\r
@param[in] P7Length Length of the PKCS#7 message in bytes.\r
- @param[out] SingerChainCerts Pointer to the certificates list chained to signer's\r
+ @param[out] SignerChainCerts Pointer to the certificates list chained to signer's\r
certificate. It's caller's responsiblity to free the buffer.\r
@param[out] ChainLength Length of the chained certificates list buffer in bytes.\r
@param[out] UnchainCerts Pointer to the unchained certificates lists. It's caller's\r