diff options
Diffstat (limited to 'arch/s390/include/uapi/asm/pkey.h')
| -rw-r--r-- | arch/s390/include/uapi/asm/pkey.h | 69 |
1 files changed, 45 insertions, 24 deletions
diff --git a/arch/s390/include/uapi/asm/pkey.h b/arch/s390/include/uapi/asm/pkey.h index e22f0720bbb8..d27d7d329263 100644 --- a/arch/s390/include/uapi/asm/pkey.h +++ b/arch/s390/include/uapi/asm/pkey.h @@ -25,10 +25,11 @@ #define MAXPROTKEYSIZE 64 /* a protected key blob may be up to 64 bytes */ #define MAXCLRKEYSIZE 32 /* a clear key value may be up to 32 bytes */ #define MAXAESCIPHERKEYSIZE 136 /* our aes cipher keys have always 136 bytes */ +#define MINEP11AESKEYBLOBSIZE 256 /* min EP11 AES key blob size */ +#define MAXEP11AESKEYBLOBSIZE 320 /* max EP11 AES key blob size */ -/* Minimum and maximum size of a key blob */ +/* Minimum size of a key blob */ #define MINKEYBLOBSIZE SECKEYBLOBSIZE -#define MAXKEYBLOBSIZE MAXAESCIPHERKEYSIZE /* defines for the type field within the pkey_protkey struct */ #define PKEY_KEYTYPE_AES_128 1 @@ -39,6 +40,7 @@ enum pkey_key_type { PKEY_TYPE_CCA_DATA = (__u32) 1, PKEY_TYPE_CCA_CIPHER = (__u32) 2, + PKEY_TYPE_EP11 = (__u32) 3, }; /* the newer ioctls use a pkey_key_size enum for key size information */ @@ -200,7 +202,7 @@ struct pkey_kblob2pkey { /* * Generate secure key, version 2. - * Generate either a CCA AES secure key or a CCA AES cipher key. + * Generate CCA AES secure key, CCA AES cipher key or EP11 AES secure key. * There needs to be a list of apqns given with at least one entry in there. * All apqns in the list need to be exact apqns, 0xFFFF as ANY card or domain * is not supported. The implementation walks through the list of apqns and @@ -210,10 +212,13 @@ struct pkey_kblob2pkey { * (return -1 with errno ENODEV). You may use the PKEY_APQNS4KT ioctl to * generate a list of apqns based on the key type to generate. * The keygenflags argument is passed to the low level generation functions - * individual for the key type and has a key type specific meaning. Currently - * only CCA AES cipher keys react to this parameter: Use one or more of the - * PKEY_KEYGEN_* flags to widen the export possibilities. By default a cipher - * key is only exportable for CPACF (PKEY_KEYGEN_XPRT_CPAC). + * individual for the key type and has a key type specific meaning. When + * generating CCA cipher keys you can use one or more of the PKEY_KEYGEN_* + * flags to widen the export possibilities. By default a cipher key is + * only exportable for CPACF (PKEY_KEYGEN_XPRT_CPAC). + * The keygenflag argument for generating an EP11 AES key should either be 0 + * to use the defaults which are XCP_BLOB_ENCRYPT, XCP_BLOB_DECRYPT and + * XCP_BLOB_PROTKEY_EXTRACTABLE or a valid combination of XCP_BLOB_* flags. */ struct pkey_genseck2 { struct pkey_apqn __user *apqns; /* in: ptr to list of apqn targets*/ @@ -229,8 +234,8 @@ struct pkey_genseck2 { /* * Generate secure key from clear key value, version 2. - * Construct a CCA AES secure key or CCA AES cipher key from a given clear key - * value. + * Construct an CCA AES secure key, CCA AES cipher key or EP11 AES secure + * key from a given clear key value. * There needs to be a list of apqns given with at least one entry in there. * All apqns in the list need to be exact apqns, 0xFFFF as ANY card or domain * is not supported. The implementation walks through the list of apqns and @@ -240,10 +245,13 @@ struct pkey_genseck2 { * (return -1 with errno ENODEV). You may use the PKEY_APQNS4KT ioctl to * generate a list of apqns based on the key type to generate. * The keygenflags argument is passed to the low level generation functions - * individual for the key type and has a key type specific meaning. Currently - * only CCA AES cipher keys react to this parameter: Use one or more of the - * PKEY_KEYGEN_* flags to widen the export possibilities. By default a cipher - * key is only exportable for CPACF (PKEY_KEYGEN_XPRT_CPAC). + * individual for the key type and has a key type specific meaning. When + * generating CCA cipher keys you can use one or more of the PKEY_KEYGEN_* + * flags to widen the export possibilities. By default a cipher key is + * only exportable for CPACF (PKEY_KEYGEN_XPRT_CPAC). + * The keygenflag argument for generating an EP11 AES key should either be 0 + * to use the defaults which are XCP_BLOB_ENCRYPT, XCP_BLOB_DECRYPT and + * XCP_BLOB_PROTKEY_EXTRACTABLE or a valid combination of XCP_BLOB_* flags. */ struct pkey_clr2seck2 { struct pkey_apqn __user *apqns; /* in: ptr to list of apqn targets */ @@ -266,14 +274,19 @@ struct pkey_clr2seck2 { * with one apqn able to handle this key. * The function also checks for the master key verification patterns * of the key matching to the current or alternate mkvp of the apqn. - * Currently CCA AES secure keys and CCA AES cipher keys are supported. - * The flags field is updated with some additional info about the apqn mkvp + * For CCA AES secure keys and CCA AES cipher keys this means to check + * the key's mkvp against the current or old mkvp of the apqns. The flags + * field is updated with some additional info about the apqn mkvp * match: If the current mkvp matches to the key's mkvp then the * PKEY_FLAGS_MATCH_CUR_MKVP bit is set, if the alternate mkvp matches to * the key's mkvp the PKEY_FLAGS_MATCH_ALT_MKVP is set. For CCA keys the * alternate mkvp is the old master key verification pattern. * CCA AES secure keys are also checked to have the CPACF export allowed * bit enabled (XPRTCPAC) in the kmf1 field. + * EP11 keys are also supported and the wkvp of the key is checked against + * the current wkvp of the apqns. There is no alternate for this type of + * key and so on a match the flag PKEY_FLAGS_MATCH_CUR_MKVP always is set. + * EP11 keys are also checked to have XCP_BLOB_PROTKEY_EXTRACTABLE set. * The ioctl returns 0 as long as the given or found apqn matches to * matches with the current or alternate mkvp to the key's mkvp. If the given * apqn does not match or there is no such apqn found, -1 with errno @@ -313,16 +326,20 @@ struct pkey_kblob2pkey2 { /* * Build a list of APQNs based on a key blob given. * Is able to find out which type of secure key is given (CCA AES secure - * key or CCA AES cipher key) and tries to find all matching crypto cards - * based on the MKVP and maybe other criterias (like CCA AES cipher keys - * need a CEX5C or higher). The list of APQNs is further filtered by the key's - * mkvp which needs to match to either the current mkvp or the alternate mkvp - * (which is the old mkvp on CCA adapters) of the apqns. The flags argument may - * be used to limit the matching apqns. If the PKEY_FLAGS_MATCH_CUR_MKVP is - * given, only the current mkvp of each apqn is compared. Likewise with the - * PKEY_FLAGS_MATCH_ALT_MKVP. If both are given, it is assumed to - * return apqns where either the current or the alternate mkvp + * key, CCA AES cipher key or EP11 AES key) and tries to find all matching + * crypto cards based on the MKVP and maybe other criterias (like CCA AES + * cipher keys need a CEX5C or higher, EP11 keys with BLOB_PKEY_EXTRACTABLE + * need a CEX7 and EP11 api version 4). The list of APQNs is further filtered + * by the key's mkvp which needs to match to either the current mkvp (CCA and + * EP11) or the alternate mkvp (old mkvp, CCA adapters only) of the apqns. The + * flags argument may be used to limit the matching apqns. If the + * PKEY_FLAGS_MATCH_CUR_MKVP is given, only the current mkvp of each apqn is + * compared. Likewise with the PKEY_FLAGS_MATCH_ALT_MKVP. If both are given, it + * is assumed to return apqns where either the current or the alternate mkvp * matches. At least one of the matching flags needs to be given. + * The flags argument for EP11 keys has no further action and is currently + * ignored (but needs to be given as PKEY_FLAGS_MATCH_CUR_MKVP) as there is only + * the wkvp from the key to match against the apqn's wkvp. * The list of matching apqns is stored into the space given by the apqns * argument and the number of stored entries goes into apqn_entries. If the list * is empty (apqn_entries is 0) the apqn_entries field is updated to the number @@ -356,6 +373,10 @@ struct pkey_apqns4key { * If both are given, it is assumed to return apqns where either the * current or the alternate mkvp matches. If no match flag is given * (flags is 0) the mkvp values are ignored for the match process. + * For EP11 keys there is only the current wkvp. So if the apqns should also + * match to a given wkvp, then the PKEY_FLAGS_MATCH_CUR_MKVP flag should be + * set. The wkvp value is 32 bytes but only the leftmost 16 bytes are compared + * against the leftmost 16 byte of the wkvp of the apqn. * The list of matching apqns is stored into the space given by the apqns * argument and the number of stored entries goes into apqn_entries. If the list * is empty (apqn_entries is 0) the apqn_entries field is updated to the number |