/* SPDX-License-Identifier: GPL-2.0+ */ /* * Copyright IBM Corp. 2019 * Author(s): Harald Freudenberger <freude@linux.ibm.com> * Ingo Franzki <ifranzki@linux.ibm.com> * * Collection of CCA misc functions used by zcrypt and pkey
*/
/* For TOKTYPE_CCA_INTERNAL: */ #define TOKVER_CCA_AES 0x04 /* CCA AES key token */ #define TOKVER_CCA_VLSC 0x05 /* var length sym cipher key token */
/* Max size of a cca variable length cipher key token */ #define MAXCCAVLSCTOKENSIZE 725
/* header part of a CCA key token */ struct keytoken_header {
u8 type; /* one of the TOKTYPE values */
u8 res0[1];
u16 len; /* vlsc token: total length in bytes */
u8 version; /* one of the TOKVER values */
u8 res1[3];
} __packed;
/* inside view of a CCA secure key token (only type 0x01 version 0x04) */ struct secaeskeytoken {
u8 type; /* 0x01 for internal key token */
u8 res0[3];
u8 version; /* should be 0x04 */
u8 res1[1];
u8 flag; /* key flags */
u8 res2[1];
u64 mkvp; /* master key verification pattern */
u8 key[32]; /* key value (encrypted) */
u8 cv[8]; /* control vector */
u16 bitsize; /* key bit size */
u16 keysize; /* key byte size */
u8 tvv[4]; /* token validation value */
} __packed;
/* inside view of a variable length symmetric cipher AES key token */ struct cipherkeytoken {
u8 type; /* 0x01 for internal key token */
u8 res0[1];
u16 len; /* total key token length in bytes */
u8 version; /* should be 0x05 */
u8 res1[3];
u8 kms; /* key material state, 0x03 means wrapped with MK */
u8 kvpt; /* key verification pattern type, should be 0x01 */
u64 mkvp0; /* master key verification pattern, lo part */
u64 mkvp1; /* master key verification pattern, hi part (unused) */
u8 eskwm; /* encrypted section key wrapping method */
u8 hashalg; /* hash algorithmus used for wrapping key */
u8 plfver; /* pay load format version */
u8 res2[1];
u8 adsver; /* associated data section version */
u8 res3[1];
u16 adslen; /* associated data section length */
u8 kllen; /* optional key label length */
u8 ieaslen; /* optional extended associated data length */
u8 uadlen; /* optional user definable associated data length */
u8 res4[1];
u16 wpllen; /* wrapped payload length in bits: */ /* plfver 0x00 0x01 */ /* AES-128 512 640 */ /* AES-192 576 640 */ /* AES-256 640 640 */
u8 res5[1];
u8 algtype; /* 0x02 for AES cipher */
u16 keytype; /* 0x0001 for 'cipher' */
u8 kufc; /* key usage field count */
u16 kuf1; /* key usage field 1 */
u16 kuf2; /* key usage field 2 */
u8 kmfc; /* key management field count */
u16 kmf1; /* key management field 1 */
u16 kmf2; /* key management field 2 */
u16 kmf3; /* key management field 3 */
u8 vdata[]; /* variable part data follows */
} __packed;
/* inside view of an CCA secure ECC private key */ struct eccprivkeytoken {
u8 type; /* 0x1f for internal asym key token */
u8 version; /* should be 0x00 */
u16 len; /* total key token length in bytes */
u8 res1[4];
u8 secid; /* 0x20 for ECC priv key section marker */
u8 secver; /* section version */
u16 seclen; /* section length */
u8 wtype; /* wrapping method, 0x00 clear, 0x01 AES */
u8 htype; /* hash method, 0x02 for SHA-256 */
u8 res2[2];
u8 kutc; /* key usage and translation control */
u8 ctype; /* curve type */
u8 kfs; /* key format and security */
u8 ksrc; /* key source */
u16 pbitlen; /* length of prime p in bits */
u16 ibmadlen; /* IBM associated data length in bytes */
u64 mkvp; /* master key verification pattern */
u8 opk[48]; /* encrypted object protection key data */
u16 adatalen; /* associated data length in bytes */
u16 fseclen; /* formatted section length in bytes */
u8 more_data[]; /* more data follows */
} __packed;
/* Some defines for the CCA AES cipherkeytoken kmf1 field */ #define KMF1_XPRT_SYM 0x8000 #define KMF1_XPRT_UASY 0x4000 #define KMF1_XPRT_AASY 0x2000 #define KMF1_XPRT_RAW 0x1000 #define KMF1_XPRT_CPAC 0x0800 #define KMF1_XPRT_DES 0x0080 #define KMF1_XPRT_AES 0x0040 #define KMF1_XPRT_RSA 0x0008
/* * Simple check if the token is a valid CCA secure AES data key * token. If keybitsize is given, the bitsize of the key is * also checked. Returns 0 on success or errno value on failure.
*/ int cca_check_secaeskeytoken(debug_info_t *dbg, int dbflvl, const u8 *token, int keybitsize);
/* * Simple check if the token is a valid CCA secure AES cipher key * token. If keybitsize is given, the bitsize of the key is * also checked. If checkcpacfexport is enabled, the key is also * checked for the export flag to allow CPACF export. * Returns 0 on success or errno value on failure.
*/ int cca_check_secaescipherkey(debug_info_t *dbg, int dbflvl, const u8 *token, int keybitsize, int checkcpacfexport);
/* * Simple check if the token is a valid CCA secure ECC private * key token. Returns 0 on success or errno value on failure.
*/ int cca_check_sececckeytoken(debug_info_t *dbg, int dbflvl, const u8 *token, u32 keysize, int checkcpacfexport);
/* * Generate (random) CCA AES DATA secure key.
*/ int cca_genseckey(u16 cardnr, u16 domain, u32 keybitsize, u8 *seckey,
u32 xflags);
/* * Generate CCA AES DATA secure key with given clear key value.
*/ int cca_clr2seckey(u16 cardnr, u16 domain, u32 keybitsize, const u8 *clrkey, u8 *seckey, u32 xflags);
/* * Derive proteced key from an CCA AES DATA secure key.
*/ int cca_sec2protkey(u16 cardnr, u16 domain, const u8 *seckey, u8 *protkey, u32 *protkeylen,
u32 *protkeytype, u32 xflags);
/* * Derive proteced key from CCA AES cipher secure key.
*/ int cca_cipher2protkey(u16 cardnr, u16 domain, const u8 *ckey,
u8 *protkey, u32 *protkeylen, u32 *protkeytype,
u32 xflags);
/* * Build CCA AES CIPHER secure key with a given clear key value.
*/ int cca_clr2cipherkey(u16 cardnr, u16 domain, u32 keybitsize, u32 keygenflags, const u8 *clrkey, u8 *keybuf, u32 *keybufsize,
u32 xflags);
/* * Derive proteced key from CCA ECC secure private key.
*/ int cca_ecc2protkey(u16 cardnr, u16 domain, const u8 *key,
u8 *protkey, u32 *protkeylen, u32 *protkeytype, u32 xflags);
/* * Query cryptographic facility from CCA adapter
*/ int cca_query_crypto_facility(u16 cardnr, u16 domain, constchar *keyword,
u8 *rarray, size_t *rarraylen,
u8 *varray, size_t *varraylen,
u32 xflags);
/* * Build a list of cca apqns meeting the following constrains: * - apqn is online and is in fact a CCA apqn * - if cardnr is not FFFF only apqns with this cardnr * - if domain is not FFFF only apqns with this domainnr * - if minhwtype > 0 only apqns with hwtype >= minhwtype * - if cur_mkvp != 0 only apqns where cur_mkvp == mkvp * - if old_mkvp != 0 only apqns where old_mkvp == mkvp * The mktype determines which set of master keys to use: * 0 = AES_MK_SET - AES MK set, 1 = APKA MK_SET - APKA MK set * The caller should set *nr_apqns to the nr of elements available in *apqns. * On return *nr_apqns is then updated with the nr of apqns filled into *apqns. * The return value is either 0 for success or a negative errno value. * If no apqn meeting the criteria is found, -ENODEV is returned.
*/ int cca_findcard2(u32 *apqns, u32 *nr_apqns, u16 cardnr, u16 domain, int minhwtype, int mktype, u64 cur_mkvp, u64 old_mkvp,
u32 xflags);
#define AES_MK_SET 0 #define APKA_MK_SET 1
/* struct to hold info for each CCA queue */ struct cca_info { int hwtype; /* one of the defined AP_DEVICE_TYPE_* */ char new_aes_mk_state; /* '1' empty, '2' partially full, '3' full */ char cur_aes_mk_state; /* '1' invalid, '2' valid */ char old_aes_mk_state; /* '1' invalid, '2' valid */ char new_apka_mk_state; /* '1' empty, '2' partially full, '3' full */ char cur_apka_mk_state; /* '1' invalid, '2' valid */ char old_apka_mk_state; /* '1' invalid, '2' valid */ char new_asym_mk_state; /* '1' empty, '2' partially full, '3' full */ char cur_asym_mk_state; /* '1' invalid, '2' valid */ char old_asym_mk_state; /* '1' invalid, '2' valid */
u64 new_aes_mkvp; /* truncated sha256 of new aes master key */
u64 cur_aes_mkvp; /* truncated sha256 of current aes master key */
u64 old_aes_mkvp; /* truncated sha256 of old aes master key */
u64 new_apka_mkvp; /* truncated sha256 of new apka master key */
u64 cur_apka_mkvp; /* truncated sha256 of current apka mk */
u64 old_apka_mkvp; /* truncated sha256 of old apka mk */
u8 new_asym_mkvp[16]; /* verify pattern of new asym master key */
u8 cur_asym_mkvp[16]; /* verify pattern of current asym master key */
u8 old_asym_mkvp[16]; /* verify pattern of old asym master key */ char serial[9]; /* serial number (8 ascii numbers + 0x00) */
};
/* * Fetch cca information about an CCA queue.
*/ int cca_get_info(u16 card, u16 dom, struct cca_info *ci, u32 xflags);
int zcrypt_ccamisc_init(void); void zcrypt_ccamisc_exit(void);
#endif/* _ZCRYPT_CCAMISC_H_ */
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