openssl_get_curve_names Gets list of available curve names for ECC &reftitle.description; arrayfalseopenssl_get_curve_names Gets the list of available curve names for use in Elliptic curve cryptography (ECC) for public/private key operations. The two most widely standardized/supported curves are prime256v1 (NIST P-256) and secp384r1 (NIST P-384). AES Symmetric Keysize (Bits) RSA and DSA Keysize (Bits) ECC Keysize (Bits) 80 1024 160 112 2048 224 128 3072 256 192 7680 384 256 15360 512 NIST recommends using ECC curves with at least 256 bits. &reftitle.parameters; &no.function.parameters; &reftitle.returnvalues; An array of available curve names, &return.falseforfailure;. &reftitle.examples; ]]> &example.outputs.similar; secp112r1 [1] => secp112r2 [2] => secp128r1 [3] => secp128r2 [4] => secp160k1 [5] => secp160r1 [6] => secp160r2 [7] => secp192k1 [8] => secp224k1 [9] => secp224r1 [10] => secp256k1 [11] => secp384r1 [12] => secp521r1 [13] => prime192v1 [14] => prime192v2 [15] => prime192v3 [16] => prime239v1 [17] => prime239v2 [18] => prime239v3 [19] => prime256v1 [20] => sect113r1 [21] => sect113r2 [22] => sect131r1 [23] => sect131r2 [24] => sect163k1 [25] => sect163r1 [26] => sect163r2 [27] => sect193r1 [28] => sect193r2 [29] => sect233k1 [30] => sect233r1 [31] => sect239k1 [32] => sect283k1 [33] => sect283r1 [34] => sect409k1 [35] => sect409r1 [36] => sect571k1 [37] => sect571r1 [38] => c2pnb163v1 [39] => c2pnb163v2 [40] => c2pnb163v3 [41] => c2pnb176v1 [42] => c2tnb191v1 [43] => c2tnb191v2 [44] => c2tnb191v3 [45] => c2pnb208w1 [46] => c2tnb239v1 [47] => c2tnb239v2 [48] => c2tnb239v3 [49] => c2pnb272w1 [50] => c2pnb304w1 [51] => c2tnb359v1 [52] => c2pnb368w1 [53] => c2tnb431r1 [54] => wap-wsg-idm-ecid-wtls1 [55] => wap-wsg-idm-ecid-wtls3 [56] => wap-wsg-idm-ecid-wtls4 [57] => wap-wsg-idm-ecid-wtls5 [58] => wap-wsg-idm-ecid-wtls6 [59] => wap-wsg-idm-ecid-wtls7 [60] => wap-wsg-idm-ecid-wtls8 [61] => wap-wsg-idm-ecid-wtls9 [62] => wap-wsg-idm-ecid-wtls10 [63] => wap-wsg-idm-ecid-wtls11 [64] => wap-wsg-idm-ecid-wtls12 [65] => Oakley-EC2N-3 [66] => Oakley-EC2N-4 [67] => brainpoolP160r1 [68] => brainpoolP160t1 [69] => brainpoolP192r1 [70] => brainpoolP192t1 [71] => brainpoolP224r1 [72] => brainpoolP224t1 [73] => brainpoolP256r1 [74] => brainpoolP256t1 [75] => brainpoolP320r1 [76] => brainpoolP320t1 [77] => brainpoolP384r1 [78] => brainpoolP384t1 [79] => brainpoolP512r1 [80] => brainpoolP512t1 ) ]]>