| /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
| /* |
| * Userspace interface to the pkey device driver |
| * |
| * Copyright IBM Corp. 2017, 2019 |
| * |
| * Author: Harald Freudenberger <freude@de.ibm.com> |
| * |
| */ |
| |
| #ifndef _UAPI_PKEY_H |
| #define _UAPI_PKEY_H |
| |
| #include <linux/ioctl.h> |
| #include <linux/types.h> |
| |
| /* |
| * Ioctl calls supported by the pkey device driver |
| */ |
| |
| #define PKEY_IOCTL_MAGIC 'p' |
| |
| #define SECKEYBLOBSIZE 64 /* secure key blob size is always 64 bytes */ |
| #define PROTKEYBLOBSIZE 80 /* protected key blob size is always 80 bytes */ |
| #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 size of a key blob */ |
| #define MINKEYBLOBSIZE SECKEYBLOBSIZE |
| |
| /* defines for the type field within the pkey_protkey struct */ |
| #define PKEY_KEYTYPE_AES_128 1 |
| #define PKEY_KEYTYPE_AES_192 2 |
| #define PKEY_KEYTYPE_AES_256 3 |
| |
| /* the newer ioctls use a pkey_key_type enum for type information */ |
| 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 */ |
| enum pkey_key_size { |
| PKEY_SIZE_AES_128 = (__u32) 128, |
| PKEY_SIZE_AES_192 = (__u32) 192, |
| PKEY_SIZE_AES_256 = (__u32) 256, |
| PKEY_SIZE_UNKNOWN = (__u32) 0xFFFFFFFF, |
| }; |
| |
| /* some of the newer ioctls use these flags */ |
| #define PKEY_FLAGS_MATCH_CUR_MKVP 0x00000002 |
| #define PKEY_FLAGS_MATCH_ALT_MKVP 0x00000004 |
| |
| /* keygenflags defines for CCA AES cipher keys */ |
| #define PKEY_KEYGEN_XPRT_SYM 0x00008000 |
| #define PKEY_KEYGEN_XPRT_UASY 0x00004000 |
| #define PKEY_KEYGEN_XPRT_AASY 0x00002000 |
| #define PKEY_KEYGEN_XPRT_RAW 0x00001000 |
| #define PKEY_KEYGEN_XPRT_CPAC 0x00000800 |
| #define PKEY_KEYGEN_XPRT_DES 0x00000080 |
| #define PKEY_KEYGEN_XPRT_AES 0x00000040 |
| #define PKEY_KEYGEN_XPRT_RSA 0x00000008 |
| |
| /* Struct to hold apqn target info (card/domain pair) */ |
| struct pkey_apqn { |
| __u16 card; |
| __u16 domain; |
| }; |
| |
| /* Struct to hold a CCA AES secure key blob */ |
| struct pkey_seckey { |
| __u8 seckey[SECKEYBLOBSIZE]; /* the secure key blob */ |
| }; |
| |
| /* Struct to hold protected key and length info */ |
| struct pkey_protkey { |
| __u32 type; /* key type, one of the PKEY_KEYTYPE_AES values */ |
| __u32 len; /* bytes actually stored in protkey[] */ |
| __u8 protkey[MAXPROTKEYSIZE]; /* the protected key blob */ |
| }; |
| |
| /* Struct to hold an AES clear key value */ |
| struct pkey_clrkey { |
| __u8 clrkey[MAXCLRKEYSIZE]; /* 16, 24, or 32 byte clear key value */ |
| }; |
| |
| /* |
| * Generate CCA AES secure key. |
| */ |
| struct pkey_genseck { |
| __u16 cardnr; /* in: card to use or FFFF for any */ |
| __u16 domain; /* in: domain or FFFF for any */ |
| __u32 keytype; /* in: key type to generate */ |
| struct pkey_seckey seckey; /* out: the secure key blob */ |
| }; |
| #define PKEY_GENSECK _IOWR(PKEY_IOCTL_MAGIC, 0x01, struct pkey_genseck) |
| |
| /* |
| * Construct CCA AES secure key from clear key value |
| */ |
| struct pkey_clr2seck { |
| __u16 cardnr; /* in: card to use or FFFF for any */ |
| __u16 domain; /* in: domain or FFFF for any */ |
| __u32 keytype; /* in: key type to generate */ |
| struct pkey_clrkey clrkey; /* in: the clear key value */ |
| struct pkey_seckey seckey; /* out: the secure key blob */ |
| }; |
| #define PKEY_CLR2SECK _IOWR(PKEY_IOCTL_MAGIC, 0x02, struct pkey_clr2seck) |
| |
| /* |
| * Fabricate AES protected key from a CCA AES secure key |
| */ |
| struct pkey_sec2protk { |
| __u16 cardnr; /* in: card to use or FFFF for any */ |
| __u16 domain; /* in: domain or FFFF for any */ |
| struct pkey_seckey seckey; /* in: the secure key blob */ |
| struct pkey_protkey protkey; /* out: the protected key */ |
| }; |
| #define PKEY_SEC2PROTK _IOWR(PKEY_IOCTL_MAGIC, 0x03, struct pkey_sec2protk) |
| |
| /* |
| * Fabricate AES protected key from clear key value |
| */ |
| struct pkey_clr2protk { |
| __u32 keytype; /* in: key type to generate */ |
| struct pkey_clrkey clrkey; /* in: the clear key value */ |
| struct pkey_protkey protkey; /* out: the protected key */ |
| }; |
| #define PKEY_CLR2PROTK _IOWR(PKEY_IOCTL_MAGIC, 0x04, struct pkey_clr2protk) |
| |
| /* |
| * Search for matching crypto card based on the Master Key |
| * Verification Pattern provided inside a CCA AES secure key. |
| */ |
| struct pkey_findcard { |
| struct pkey_seckey seckey; /* in: the secure key blob */ |
| __u16 cardnr; /* out: card number */ |
| __u16 domain; /* out: domain number */ |
| }; |
| #define PKEY_FINDCARD _IOWR(PKEY_IOCTL_MAGIC, 0x05, struct pkey_findcard) |
| |
| /* |
| * Combined together: findcard + sec2prot |
| */ |
| struct pkey_skey2pkey { |
| struct pkey_seckey seckey; /* in: the secure key blob */ |
| struct pkey_protkey protkey; /* out: the protected key */ |
| }; |
| #define PKEY_SKEY2PKEY _IOWR(PKEY_IOCTL_MAGIC, 0x06, struct pkey_skey2pkey) |
| |
| /* |
| * Verify the given CCA AES secure key for being able to be useable with |
| * the pkey module. Check for correct key type and check for having at |
| * least one crypto card being able to handle this key (master key |
| * or old master key verification pattern matches). |
| * Return some info about the key: keysize in bits, keytype (currently |
| * only AES), flag if key is wrapped with an old MKVP. |
| */ |
| struct pkey_verifykey { |
| struct pkey_seckey seckey; /* in: the secure key blob */ |
| __u16 cardnr; /* out: card number */ |
| __u16 domain; /* out: domain number */ |
| __u16 keysize; /* out: key size in bits */ |
| __u32 attributes; /* out: attribute bits */ |
| }; |
| #define PKEY_VERIFYKEY _IOWR(PKEY_IOCTL_MAGIC, 0x07, struct pkey_verifykey) |
| #define PKEY_VERIFY_ATTR_AES 0x00000001 /* key is an AES key */ |
| #define PKEY_VERIFY_ATTR_OLD_MKVP 0x00000100 /* key has old MKVP value */ |
| |
| /* |
| * Generate AES random protected key. |
| */ |
| struct pkey_genprotk { |
| __u32 keytype; /* in: key type to generate */ |
| struct pkey_protkey protkey; /* out: the protected key */ |
| }; |
| |
| #define PKEY_GENPROTK _IOWR(PKEY_IOCTL_MAGIC, 0x08, struct pkey_genprotk) |
| |
| /* |
| * Verify an AES protected key. |
| */ |
| struct pkey_verifyprotk { |
| struct pkey_protkey protkey; /* in: the protected key to verify */ |
| }; |
| |
| #define PKEY_VERIFYPROTK _IOW(PKEY_IOCTL_MAGIC, 0x09, struct pkey_verifyprotk) |
| |
| /* |
| * Transform an key blob (of any type) into a protected key |
| */ |
| struct pkey_kblob2pkey { |
| __u8 __user *key; /* in: the key blob */ |
| __u32 keylen; /* in: the key blob length */ |
| struct pkey_protkey protkey; /* out: the protected key */ |
| }; |
| #define PKEY_KBLOB2PROTK _IOWR(PKEY_IOCTL_MAGIC, 0x0A, struct pkey_kblob2pkey) |
| |
| /* |
| * Generate secure key, version 2. |
| * 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 |
| * tries to send the request to each apqn without any further checking (like |
| * card type or online state). If the apqn fails, simple the next one in the |
| * list is tried until success (return 0) or the end of the list is reached |
| * (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. 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*/ |
| __u32 apqn_entries; /* in: # of apqn target list entries */ |
| enum pkey_key_type type; /* in: key type to generate */ |
| enum pkey_key_size size; /* in: key size to generate */ |
| __u32 keygenflags; /* in: key generation flags */ |
| __u8 __user *key; /* in: pointer to key blob buffer */ |
| __u32 keylen; /* in: available key blob buffer size */ |
| /* out: actual key blob size */ |
| }; |
| #define PKEY_GENSECK2 _IOWR(PKEY_IOCTL_MAGIC, 0x11, struct pkey_genseck2) |
| |
| /* |
| * Generate secure key from clear key value, version 2. |
| * 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 |
| * tries to send the request to each apqn without any further checking (like |
| * card type or online state). If the apqn fails, simple the next one in the |
| * list is tried until success (return 0) or the end of the list is reached |
| * (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. 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 */ |
| __u32 apqn_entries; /* in: # of apqn target list entries */ |
| enum pkey_key_type type; /* in: key type to generate */ |
| enum pkey_key_size size; /* in: key size to generate */ |
| __u32 keygenflags; /* in: key generation flags */ |
| struct pkey_clrkey clrkey; /* in: the clear key value */ |
| __u8 __user *key; /* in: pointer to key blob buffer */ |
| __u32 keylen; /* in: available key blob buffer size */ |
| /* out: actual key blob size */ |
| }; |
| #define PKEY_CLR2SECK2 _IOWR(PKEY_IOCTL_MAGIC, 0x12, struct pkey_clr2seck2) |
| |
| /* |
| * Verify the given secure key, version 2. |
| * Check for correct key type. If cardnr and domain are given (are not |
| * 0xFFFF) also check if this apqn is able to handle this type of key. |
| * If cardnr and/or domain is 0xFFFF, on return these values are filled |
| * 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. |
| * 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 |
| * ENODEV is returned. |
| */ |
| struct pkey_verifykey2 { |
| __u8 __user *key; /* in: pointer to key blob */ |
| __u32 keylen; /* in: key blob size */ |
| __u16 cardnr; /* in/out: card number */ |
| __u16 domain; /* in/out: domain number */ |
| enum pkey_key_type type; /* out: the key type */ |
| enum pkey_key_size size; /* out: the key size */ |
| __u32 flags; /* out: additional key info flags */ |
| }; |
| #define PKEY_VERIFYKEY2 _IOWR(PKEY_IOCTL_MAGIC, 0x17, struct pkey_verifykey2) |
| |
| /* |
| * Transform a key blob (of any type) into a protected key, version 2. |
| * 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 |
| * tries to send the request to each apqn without any further checking (like |
| * card type or online state). If the apqn fails, simple the next one in the |
| * list is tried until success (return 0) or the end of the list is reached |
| * (return -1 with errno ENODEV). You may use the PKEY_APQNS4K ioctl to |
| * generate a list of apqns based on the key. |
| */ |
| struct pkey_kblob2pkey2 { |
| __u8 __user *key; /* in: pointer to key blob */ |
| __u32 keylen; /* in: key blob size */ |
| struct pkey_apqn __user *apqns; /* in: ptr to list of apqn targets */ |
| __u32 apqn_entries; /* in: # of apqn target list entries */ |
| struct pkey_protkey protkey; /* out: the protected key */ |
| }; |
| #define PKEY_KBLOB2PROTK2 _IOWR(PKEY_IOCTL_MAGIC, 0x1A, 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, 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 |
| * of apqn targets found and the ioctl returns with 0. If apqn_entries is > 0 |
| * but the number of apqn targets does not fit into the list, the apqn_targets |
| * field is updatedd with the number of reqired entries but there are no apqn |
| * values stored in the list and the ioctl returns with ENOSPC. If no matching |
| * APQN is found, the ioctl returns with 0 but the apqn_entries value is 0. |
| */ |
| struct pkey_apqns4key { |
| __u8 __user *key; /* in: pointer to key blob */ |
| __u32 keylen; /* in: key blob size */ |
| __u32 flags; /* in: match controlling flags */ |
| struct pkey_apqn __user *apqns; /* in/out: ptr to list of apqn targets*/ |
| __u32 apqn_entries; /* in: max # of apqn entries in the list */ |
| /* out: # apqns stored into the list */ |
| }; |
| #define PKEY_APQNS4K _IOWR(PKEY_IOCTL_MAGIC, 0x1B, struct pkey_apqns4key) |
| |
| /* |
| * Build a list of APQNs based on a key type given. |
| * Build a list of APQNs based on a given key type and maybe further |
| * restrict the list by given master key verification patterns. |
| * For different key types there may be different ways to match the |
| * master key verification patterns. For CCA keys (CCA data key and CCA |
| * cipher key) the first 8 bytes of cur_mkvp refer to the current mkvp value |
| * of the apqn and the first 8 bytes of the alt_mkvp refer to the old mkvp. |
| * The flags argument controls if the apqns current and/or alternate mkvp |
| * should match. 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. 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 |
| * of apqn targets found and the ioctl returns with 0. If apqn_entries is > 0 |
| * but the number of apqn targets does not fit into the list, the apqn_targets |
| * field is updatedd with the number of reqired entries but there are no apqn |
| * values stored in the list and the ioctl returns with ENOSPC. If no matching |
| * APQN is found, the ioctl returns with 0 but the apqn_entries value is 0. |
| */ |
| struct pkey_apqns4keytype { |
| enum pkey_key_type type; /* in: key type */ |
| __u8 cur_mkvp[32]; /* in: current mkvp */ |
| __u8 alt_mkvp[32]; /* in: alternate mkvp */ |
| __u32 flags; /* in: match controlling flags */ |
| struct pkey_apqn __user *apqns; /* in/out: ptr to list of apqn targets*/ |
| __u32 apqn_entries; /* in: max # of apqn entries in the list */ |
| /* out: # apqns stored into the list */ |
| }; |
| #define PKEY_APQNS4KT _IOWR(PKEY_IOCTL_MAGIC, 0x1C, struct pkey_apqns4keytype) |
| |
| #endif /* _UAPI_PKEY_H */ |
