ubifs: remove useless code

[u-boot] / lib / tpm-v2.c

diff --git a/lib/tpm-v2.c b/lib/tpm-v2.c
index ffe8613edc349ca1c41bff3c9b226caae244135f..f1bbca8e7aa51e06806fa5914404605d64bc0d8f 100644 (file)
--- a/lib/tpm-v2.c
+++ b/lib/tpm-v2.c
@@ -317,3 +317,103 @@ int tpm2_change_auth(u32 handle, const char *newpw, const ssize_t newpw_sz,
 
        return tpm_sendrecv_command(command_v2, NULL, NULL);
 }
+
+u32 tpm2_pcr_setauthpolicy(const char *pw, const ssize_t pw_sz, u32 index,
+                          const char *key)
+{
+       u8 command_v2[COMMAND_BUFFER_SIZE] = {
+               tpm_u16(TPM2_ST_SESSIONS),      /* TAG */
+               tpm_u32(35 + pw_sz + TPM2_DIGEST_LEN), /* Length */
+               tpm_u32(TPM2_CC_PCR_SETAUTHPOL), /* Command code */
+
+               /* HANDLE */
+               tpm_u32(TPM2_RH_PLATFORM),      /* TPM resource handle */
+
+               /* AUTH_SESSION */
+               tpm_u32(9 + pw_sz),             /* Authorization size */
+               tpm_u32(TPM2_RS_PW),            /* session handle */
+               tpm_u16(0),                     /* Size of <nonce> */
+                                               /* <nonce> (if any) */
+               0,                              /* Attributes: Cont/Excl/Rst */
+               tpm_u16(pw_sz)                  /* Size of <hmac/password> */
+               /* STRING(pw)                      <hmac/password> (if any) */
+
+               /* TPM2B_AUTH (TPM2B_DIGEST) */
+               /* tpm_u16(TPM2_DIGEST_LEN)        Digest size length */
+               /* STRING(key)                     Digest buffer (PCR key) */
+
+               /* TPMI_ALG_HASH */
+               /* tpm_u16(TPM2_ALG_SHA256)   Algorithm of the hash */
+
+               /* TPMI_DH_PCR */
+               /* tpm_u32(index),                 PCR Index */
+       };
+       unsigned int offset = 27;
+       int ret;
+
+       /*
+        * Fill the command structure starting from the first buffer:
+        *     - the password (if any)
+        *     - the PCR key length
+        *     - the PCR key
+        *     - the hash algorithm
+        *     - the PCR index
+        */
+       ret = pack_byte_string(command_v2, sizeof(command_v2), "swswd",
+                              offset, pw, pw_sz,
+                              offset + pw_sz, TPM2_DIGEST_LEN,
+                              offset + pw_sz + 2, key, TPM2_DIGEST_LEN,
+                              offset + pw_sz + 2 + TPM2_DIGEST_LEN,
+                              TPM2_ALG_SHA256,
+                              offset + pw_sz + 4 + TPM2_DIGEST_LEN, index);
+       offset += pw_sz + 2 + TPM2_DIGEST_LEN + 2 + 4;
+       if (ret)
+               return TPM_LIB_ERROR;
+
+       return tpm_sendrecv_command(command_v2, NULL, NULL);
+}
+
+u32 tpm2_pcr_setauthvalue(const char *pw, const ssize_t pw_sz, u32 index,
+                         const char *key, const ssize_t key_sz)
+{
+       u8 command_v2[COMMAND_BUFFER_SIZE] = {
+               tpm_u16(TPM2_ST_SESSIONS),      /* TAG */
+               tpm_u32(33 + pw_sz + TPM2_DIGEST_LEN), /* Length */
+               tpm_u32(TPM2_CC_PCR_SETAUTHVAL), /* Command code */
+
+               /* HANDLE */
+               tpm_u32(index),                 /* Handle (PCR Index) */
+
+               /* AUTH_SESSION */
+               tpm_u32(9 + pw_sz),             /* Authorization size */
+               tpm_u32(TPM2_RS_PW),            /* session handle */
+               tpm_u16(0),                     /* Size of <nonce> */
+                                               /* <nonce> (if any) */
+               0,                              /* Attributes: Cont/Excl/Rst */
+               tpm_u16(pw_sz),                 /* Size of <hmac/password> */
+               /* STRING(pw)                      <hmac/password> (if any) */
+
+               /* TPM2B_DIGEST */
+               /* tpm_u16(key_sz)                 Key length */
+               /* STRING(key)                     Key */
+       };
+       unsigned int offset = 27;
+       int ret;
+
+       /*
+        * Fill the command structure starting from the first buffer:
+        *     - the password (if any)
+        *     - the number of digests, 1 in our case
+        *     - the algorithm, sha256 in our case
+        *     - the digest (64 bytes)
+        */
+       ret = pack_byte_string(command_v2, sizeof(command_v2), "sws",
+                              offset, pw, pw_sz,
+                              offset + pw_sz, key_sz,
+                              offset + pw_sz + 2, key, key_sz);
+       offset += pw_sz + 2 + key_sz;
+       if (ret)
+               return TPM_LIB_ERROR;
+
+       return tpm_sendrecv_command(command_v2, NULL, NULL);
+}