Skip to content

tpm

Directory actions

More options

Directory actions

More options

Latest commit

 

History

History

tpm

Folders and files

NameName
Last commit message
Last commit date

parent directory

..
Makefile
Makefile
 
 
README.md
README.md
 
 
evp_tpm.c
evp_tpm.c
 
 

README.md

TPM Examples

EVP with TPM Example (evp_tpm.c)

This example shows use of the EVP compatibility layer with the crypto callbacks and TPM. Note: Requires PR wolfSSL/wolfssl#4333

Building wolfSSL

% ./configure --enable-opensslextra --enable-wolftpm --enable-cryptocb [--enable-debug] [--prefix=DIR]
% make
% make install

Building wolfTPM

% ./configure [--enable-swtpm] [--enable-debug] [--prefix=DIR]
% make
% make install

Building evp_tpm example

% make
gcc -I/usr/local/include -Wall   -c -o evp_tpm.o evp_tpm.c
gcc -o evp_tpm evp_tpm.o -I/usr/local/include -Wall  -L/usr/local/lib -lwolfssl -lwolftpm

Example Output

% ./evp_tpm
wolfSSL Entering wolfCrypt_Init
TPM2: Caps 0x00000000, Did 0x0000, Vid 0x0000, Rid 0x 0
TPM2_Startup pass
TPM2_SelfTest pass
TPM2_ReadPublic Handle 0x81000201: pub 90, name 34, qualifiedName 34
Loading SRK: Storage 0x81000201 (90 bytes)
TPM2_Create key: pub 88, priv 126
Public Area (size 88):
  Type: ECC (0x23), name: SHA256 (0xB), objAttr: 0x40460, authPolicy sz: 0
  ECC: sym algorithm: NULL (0x10), sym keyBits: 0, sym mode: Unknown (0x0)
       scheme: ECDSA (0x18), scheme hash: SHA256 (0xB), curveID: size 32, 0x3
       KDF scheme: NULL (0x10), KDF alg: Unknown (0x0), unique X/Y size 32/32
TPM2_Load Key Handle 0x80000002
Create/Load ECC Key: Handle 0x80000002 (88 bytes)
EVP_MD_ecc_signing()
CryptoCbFunc Pk: Type 4
TPM2_Sign: ECDSA 64
EVP_DigestSignFinal sz 72
EVP_DigestVerifyFinal success
Result: success (0)
TPM2_FlushContext: Closed handle 0x80000002

Support

For questions please email support@wolfssl.com