Add an error-checking wc_curve25519_make_pub() routine to the API for use by Wireguard#3200

Merged

dgarske merged 11 commits intowolfSSL:masterfrom

douzzer:20200805

Aug 7, 2020

Commits on Aug 5, 2020

add public function wc_curve25519() "compute the public key from an existing private key, using bare vectors."; rename existing _LOCAL functions wc_curve25519_GetBasePoint() and wc_curve25519() to …
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committed

Commits on Aug 6, 2020

add missing const qualifiers to arch variants of curve25519(), and to nxp_ltc_curve25519().
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fix typo in wolfcrypt/src/port/nxp/ksdk_port.c ("curve_bCurveParam" vs correct curve25529_bCurveParam) introduced in aadec345ab894e9ca5304885964f36c64963661e.
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wolfcrypt/src/curve25519.c: fix typo in wc_curve25519() -- CURVE25519_KEYSIZE, not CURVE25519_KEY_SIZE; add static kCurve25519BasePoint at top level
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ksdk_port.c: third time's the charm? (typo, s/curve25529_bCurveParam/curve25519_bCurveParam)
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curve25519.c: call the new API routine wc_curve25519_make_pub(), not wc_curve25519(), for clarity and consistency (hat tip to Jacob).
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Fix for TLS anonymous cipher and PKCS11 cast warnings. (author=dgarske)
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tests/api.c: add test_wc_curve25519_make_pub(); fix some old stray tabs; remove weird extra string-terminating null in test_wolfSSL_sk_CIPHER_description().
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note argument endianness and return values in intro comment for wc_curve25519_make_pub().
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test_wc_curve25519_make_pub(): fix order of args to wc_curve25519_make_pub().
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Commits on Aug 7, 2020

refactor wc_curve25519_make_key() to use wc_curve25519_make_pub() to complete the pair. also, add call to fe_init() in the non-NXP codepath of wc_curve25519_make_pub() (note fe_init() is currently…
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committed